Home / 2,225.49-3,071.12-1,230.75

Finding the Fourth Proportional to 2,225.49, 3,071.12 and 1,230.75

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Solution

The fourth proportional to 2,225.49, 3,071.12 and 1,230.75 is: 1,698.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.49 : 3,071.12 = 1,230.75 : x
  2. Step 2: Convert to fraction form
    2,225.49/3,071.12 = 1,230.75/x
  3. Step 3: Cross multiply
    2,225.49x = 3,071.12 × 1,230.75
  4. Step 4: Simplify right side
    2,225.49x = 3,779,780.94
  5. Step 5: Solve for x
    x = 3,779,780.94/2,225.49
  6. Step 6: Final answer
    x = 1,698.40

Related Problems

Find fourth proportional to 1,112.75, 1,535.56 and 615.38
Half scale
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Double scale
Find fourth proportional to 2,226.49, 3,072.50 and 1,231.75
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.