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Finding the Fourth Proportional to 5,397, 7,447.86 and 3,158.77

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Solution

The fourth proportional to 5,397, 7,447.86 and 3,158.77 is: 4,359.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,397 : 7,447.86 = 3,158.77 : x
  2. Step 2: Convert to fraction form
    5,397/7,447.86 = 3,158.77/x
  3. Step 3: Cross multiply
    5,397x = 7,447.86 × 3,158.77
  4. Step 4: Simplify right side
    5,397x = 23,526,058.11
  5. Step 5: Solve for x
    x = 23,526,058.11/5,397
  6. Step 6: Final answer
    x = 4,359.10

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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.