Home / 8,901.20-12,279.80-5,362.38

Finding the Fourth Proportional to 8,901.20, 12,279.80 and 5,362.38

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Solution

The fourth proportional to 8,901.20, 12,279.80 and 5,362.38 is: 7,397.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,901.20 : 12,279.80 = 5,362.38 : x
  2. Step 2: Convert to fraction form
    8,901.20/12,279.80 = 5,362.38/x
  3. Step 3: Cross multiply
    8,901.20x = 12,279.80 × 5,362.38
  4. Step 4: Simplify right side
    8,901.20x = 65,848,953.92
  5. Step 5: Solve for x
    x = 65,848,953.92/8,901.20
  6. Step 6: Final answer
    x = 7,397.76

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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.