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Finding the Fourth Proportional to 8,980, 12,392.40 and 5,841.52

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Solution

The fourth proportional to 8,980, 12,392.40 and 5,841.52 is: 8,061.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980 : 12,392.40 = 5,841.52 : x
  2. Step 2: Convert to fraction form
    8,980/12,392.40 = 5,841.52/x
  3. Step 3: Cross multiply
    8,980x = 12,392.40 × 5,841.52
  4. Step 4: Simplify right side
    8,980x = 72,390,452.45
  5. Step 5: Solve for x
    x = 72,390,452.45/8,980
  6. Step 6: Final answer
    x = 8,061.30

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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.