Home / 2,225.63-3,071.52-1,230.92

Finding the Fourth Proportional to 2,225.63, 3,071.52 and 1,230.92

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Solution

The fourth proportional to 2,225.63, 3,071.52 and 1,230.92 is: 1,698.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.63 : 3,071.52 = 1,230.92 : x
  2. Step 2: Convert to fraction form
    2,225.63/3,071.52 = 1,230.92/x
  3. Step 3: Cross multiply
    2,225.63x = 3,071.52 × 1,230.92
  4. Step 4: Simplify right side
    2,225.63x = 3,780,789.24
  5. Step 5: Solve for x
    x = 3,780,789.24/2,225.63
  6. Step 6: Final answer
    x = 1,698.75

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Half scale
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Double scale
Find fourth proportional to 2,226.63, 3,072.90 and 1,231.92
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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.