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Finding the Fourth Proportional to 8,702.61, 13,024.35 and 5,372.98

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Solution

The fourth proportional to 8,702.61, 13,024.35 and 5,372.98 is: 8,041.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.61 : 13,024.35 = 5,372.98 : x
  2. Step 2: Convert to fraction form
    8,702.61/13,024.35 = 5,372.98/x
  3. Step 3: Cross multiply
    8,702.61x = 13,024.35 × 5,372.98
  4. Step 4: Simplify right side
    8,702.61x = 69,979,539.50
  5. Step 5: Solve for x
    x = 69,979,539.50/8,702.61
  6. Step 6: Final answer
    x = 8,041.21

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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.