Home / 4,720.46-7,080.68-1,257.71

Finding the Fourth Proportional to 4,720.46, 7,080.68 and 1,257.71

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Solution

The fourth proportional to 4,720.46, 7,080.68 and 1,257.71 is: 1,886.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.46 : 7,080.68 = 1,257.71 : x
  2. Step 2: Convert to fraction form
    4,720.46/7,080.68 = 1,257.71/x
  3. Step 3: Cross multiply
    4,720.46x = 7,080.68 × 1,257.71
  4. Step 4: Simplify right side
    4,720.46x = 8,905,400.35
  5. Step 5: Solve for x
    x = 8,905,400.35/4,720.46
  6. Step 6: Final answer
    x = 1,886.56

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.