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Finding the Fourth Proportional to 6,411.68, 8,845.74 and 4,317.20

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Solution

The fourth proportional to 6,411.68, 8,845.74 and 4,317.20 is: 5,956.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,411.68 : 8,845.74 = 4,317.20 : x
  2. Step 2: Convert to fraction form
    6,411.68/8,845.74 = 4,317.20/x
  3. Step 3: Cross multiply
    6,411.68x = 8,845.74 × 4,317.20
  4. Step 4: Simplify right side
    6,411.68x = 38,188,828.73
  5. Step 5: Solve for x
    x = 38,188,828.73/6,411.68
  6. Step 6: Final answer
    x = 5,956.13

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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.