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Finding the Fourth Proportional to 8,903.25, 13,358.79 and 4,742.15

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Solution

The fourth proportional to 8,903.25, 13,358.79 and 4,742.15 is: 7,115.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,903.25 : 13,358.79 = 4,742.15 : x
  2. Step 2: Convert to fraction form
    8,903.25/13,358.79 = 4,742.15/x
  3. Step 3: Cross multiply
    8,903.25x = 13,358.79 × 4,742.15
  4. Step 4: Simplify right side
    8,903.25x = 63,349,319.20
  5. Step 5: Solve for x
    x = 63,349,319.20/8,903.25
  6. Step 6: Final answer
    x = 7,115.30

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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.