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Finding the Fourth Proportional to 8,739.35, 12,057.67 and 7,897.35

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Solution

The fourth proportional to 8,739.35, 12,057.67 and 7,897.35 is: 10,895.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.35 : 12,057.67 = 7,897.35 : x
  2. Step 2: Convert to fraction form
    8,739.35/12,057.67 = 7,897.35/x
  3. Step 3: Cross multiply
    8,739.35x = 12,057.67 × 7,897.35
  4. Step 4: Simplify right side
    8,739.35x = 95,223,640.17
  5. Step 5: Solve for x
    x = 95,223,640.17/8,739.35
  6. Step 6: Final answer
    x = 10,895.96

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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.