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Finding the Fourth Proportional to 8,691.61, 13,006.26 and 7,525.63

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Solution

The fourth proportional to 8,691.61, 13,006.26 and 7,525.63 is: 11,261.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.61 : 13,006.26 = 7,525.63 : x
  2. Step 2: Convert to fraction form
    8,691.61/13,006.26 = 7,525.63/x
  3. Step 3: Cross multiply
    8,691.61x = 13,006.26 × 7,525.63
  4. Step 4: Simplify right side
    8,691.61x = 97,880,300.44
  5. Step 5: Solve for x
    x = 97,880,300.44/8,691.61
  6. Step 6: Final answer
    x = 11,261.48

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1.5x scale

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.