Home / 8,910.40-12,295.92-5,761.12

Finding the Fourth Proportional to 8,910.40, 12,295.92 and 5,761.12

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Solution

The fourth proportional to 8,910.40, 12,295.92 and 5,761.12 is: 7,950.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,910.40 : 12,295.92 = 5,761.12 : x
  2. Step 2: Convert to fraction form
    8,910.40/12,295.92 = 5,761.12/x
  3. Step 3: Cross multiply
    8,910.40x = 12,295.92 × 5,761.12
  4. Step 4: Simplify right side
    8,910.40x = 70,838,270.63
  5. Step 5: Solve for x
    x = 70,838,270.63/8,910.40
  6. Step 6: Final answer
    x = 7,950.07

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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.