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Finding the Fourth Proportional to 8,625.70, 11,897.85 and 7,051.30

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Solution

The fourth proportional to 8,625.70, 11,897.85 and 7,051.30 is: 9,726.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.70 : 11,897.85 = 7,051.30 : x
  2. Step 2: Convert to fraction form
    8,625.70/11,897.85 = 7,051.30/x
  3. Step 3: Cross multiply
    8,625.70x = 11,897.85 × 7,051.30
  4. Step 4: Simplify right side
    8,625.70x = 83,895,309.71
  5. Step 5: Solve for x
    x = 83,895,309.71/8,625.70
  6. Step 6: Final answer
    x = 9,726.20

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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.