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Finding the Fourth Proportional to 8,699.97, 12,986.95 and 7,649.04

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Solution

The fourth proportional to 8,699.97, 12,986.95 and 7,649.04 is: 11,418.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.97 : 12,986.95 = 7,649.04 : x
  2. Step 2: Convert to fraction form
    8,699.97/12,986.95 = 7,649.04/x
  3. Step 3: Cross multiply
    8,699.97x = 12,986.95 × 7,649.04
  4. Step 4: Simplify right side
    8,699.97x = 99,337,700.03
  5. Step 5: Solve for x
    x = 99,337,700.03/8,699.97
  6. Step 6: Final answer
    x = 11,418.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.