Home / 8,981.20-12,393.84-5,002.21

Finding the Fourth Proportional to 8,981.20, 12,393.84 and 5,002.21

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Solution

The fourth proportional to 8,981.20, 12,393.84 and 5,002.21 is: 6,902.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.20 : 12,393.84 = 5,002.21 : x
  2. Step 2: Convert to fraction form
    8,981.20/12,393.84 = 5,002.21/x
  3. Step 3: Cross multiply
    8,981.20x = 12,393.84 × 5,002.21
  4. Step 4: Simplify right side
    8,981.20x = 61,996,590.39
  5. Step 5: Solve for x
    x = 61,996,590.39/8,981.20
  6. Step 6: Final answer
    x = 6,902.93

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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.