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Finding the Fourth Proportional to 8,472.04, 12,710.22 and 2,628.70

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Solution

The fourth proportional to 8,472.04, 12,710.22 and 2,628.70 is: 3,943.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.04 : 12,710.22 = 2,628.70 : x
  2. Step 2: Convert to fraction form
    8,472.04/12,710.22 = 2,628.70/x
  3. Step 3: Cross multiply
    8,472.04x = 12,710.22 × 2,628.70
  4. Step 4: Simplify right side
    8,472.04x = 33,411,355.31
  5. Step 5: Solve for x
    x = 33,411,355.31/8,472.04
  6. Step 6: Final answer
    x = 3,943.72

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.