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Finding the Fourth Proportional to 8,839.78, 13,254.54 and 4,681.78

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Solution

The fourth proportional to 8,839.78, 13,254.54 and 4,681.78 is: 7,019.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,839.78 : 13,254.54 = 4,681.78 : x
  2. Step 2: Convert to fraction form
    8,839.78/13,254.54 = 4,681.78/x
  3. Step 3: Cross multiply
    8,839.78x = 13,254.54 × 4,681.78
  4. Step 4: Simplify right side
    8,839.78x = 62,054,840.28
  5. Step 5: Solve for x
    x = 62,054,840.28/8,839.78
  6. Step 6: Final answer
    x = 7,019.95

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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.