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Finding the Fourth Proportional to 4,259.68, 6,389.12 and 1,337.76

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Solution

The fourth proportional to 4,259.68, 6,389.12 and 1,337.76 is: 2,006.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,259.68 : 6,389.12 = 1,337.76 : x
  2. Step 2: Convert to fraction form
    4,259.68/6,389.12 = 1,337.76/x
  3. Step 3: Cross multiply
    4,259.68x = 6,389.12 × 1,337.76
  4. Step 4: Simplify right side
    4,259.68x = 8,547,109.17
  5. Step 5: Solve for x
    x = 8,547,109.17/4,259.68
  6. Step 6: Final answer
    x = 2,006.51

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Double scale
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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.