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Finding the Fourth Proportional to 8,791.24, 12,130.84 and 7,003.28

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Solution

The fourth proportional to 8,791.24, 12,130.84 and 7,003.28 is: 9,663.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.24 : 12,130.84 = 7,003.28 : x
  2. Step 2: Convert to fraction form
    8,791.24/12,130.84 = 7,003.28/x
  3. Step 3: Cross multiply
    8,791.24x = 12,130.84 × 7,003.28
  4. Step 4: Simplify right side
    8,791.24x = 84,955,617.26
  5. Step 5: Solve for x
    x = 84,955,617.26/8,791.24
  6. Step 6: Final answer
    x = 9,663.66

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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.