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Finding the Fourth Proportional to 8,706.76, 12,017.16 and 5,562.40

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Solution

The fourth proportional to 8,706.76, 12,017.16 and 5,562.40 is: 7,677.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.76 : 12,017.16 = 5,562.40 : x
  2. Step 2: Convert to fraction form
    8,706.76/12,017.16 = 5,562.40/x
  3. Step 3: Cross multiply
    8,706.76x = 12,017.16 × 5,562.40
  4. Step 4: Simplify right side
    8,706.76x = 66,844,250.78
  5. Step 5: Solve for x
    x = 66,844,250.78/8,706.76
  6. Step 6: Final answer
    x = 7,677.28

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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.