Home / 2,225.39-3,071.01-1,230.66

Finding the Fourth Proportional to 2,225.39, 3,071.01 and 1,230.66

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Solution

The fourth proportional to 2,225.39, 3,071.01 and 1,230.66 is: 1,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.39 : 3,071.01 = 1,230.66 : x
  2. Step 2: Convert to fraction form
    2,225.39/3,071.01 = 1,230.66/x
  3. Step 3: Cross multiply
    2,225.39x = 3,071.01 × 1,230.66
  4. Step 4: Simplify right side
    2,225.39x = 3,779,369.17
  5. Step 5: Solve for x
    x = 3,779,369.17/2,225.39
  6. Step 6: Final answer
    x = 1,698.30

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Half scale
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Double scale
Find fourth proportional to 2,226.39, 3,072.39 and 1,231.66
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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.