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Finding the Fourth Proportional to 8,686.60, 13,030.02 and 6,242.20

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Solution

The fourth proportional to 8,686.60, 13,030.02 and 6,242.20 is: 9,363.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.60 : 13,030.02 = 6,242.20 : x
  2. Step 2: Convert to fraction form
    8,686.60/13,030.02 = 6,242.20/x
  3. Step 3: Cross multiply
    8,686.60x = 13,030.02 × 6,242.20
  4. Step 4: Simplify right side
    8,686.60x = 81,335,990.84
  5. Step 5: Solve for x
    x = 81,335,990.84/8,686.60
  6. Step 6: Final answer
    x = 9,363.39

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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.