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Finding the Fourth Proportional to 6,397.39, 8,828.65 and 3,708.71

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Solution

The fourth proportional to 6,397.39, 8,828.65 and 3,708.71 is: 5,118.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,397.39 : 8,828.65 = 3,708.71 : x
  2. Step 2: Convert to fraction form
    6,397.39/8,828.65 = 3,708.71/x
  3. Step 3: Cross multiply
    6,397.39x = 8,828.65 × 3,708.71
  4. Step 4: Simplify right side
    6,397.39x = 32,742,858.40
  5. Step 5: Solve for x
    x = 32,742,858.40/6,397.39
  6. Step 6: Final answer
    x = 5,118.16

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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.