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Finding the Fourth Proportional to 8,772.72, 12,114.87 and 7,506.36

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Solution

The fourth proportional to 8,772.72, 12,114.87 and 7,506.36 is: 10,366.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.72 : 12,114.87 = 7,506.36 : x
  2. Step 2: Convert to fraction form
    8,772.72/12,114.87 = 7,506.36/x
  3. Step 3: Cross multiply
    8,772.72x = 12,114.87 × 7,506.36
  4. Step 4: Simplify right side
    8,772.72x = 90,938,575.57
  5. Step 5: Solve for x
    x = 90,938,575.57/8,772.72
  6. Step 6: Final answer
    x = 10,366.06

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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.