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Finding the Fourth Proportional to 7,319.98, 10,981.02 and 2,388.40

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Solution

The fourth proportional to 7,319.98, 10,981.02 and 2,388.40 is: 3,582.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319.98 : 10,981.02 = 2,388.40 : x
  2. Step 2: Convert to fraction form
    7,319.98/10,981.02 = 2,388.40/x
  3. Step 3: Cross multiply
    7,319.98x = 10,981.02 × 2,388.40
  4. Step 4: Simplify right side
    7,319.98x = 26,227,068.17
  5. Step 5: Solve for x
    x = 26,227,068.17/7,319.98
  6. Step 6: Final answer
    x = 3,582.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.