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Finding the Fourth Proportional to 9,342.80, 12,897.80 and 6,158.18

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Solution

The fourth proportional to 9,342.80, 12,897.80 and 6,158.18 is: 8,501.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,342.80 : 12,897.80 = 6,158.18 : x
  2. Step 2: Convert to fraction form
    9,342.80/12,897.80 = 6,158.18/x
  3. Step 3: Cross multiply
    9,342.80x = 12,897.80 × 6,158.18
  4. Step 4: Simplify right side
    9,342.80x = 79,426,974.00
  5. Step 5: Solve for x
    x = 79,426,974.00/9,342.80
  6. Step 6: Final answer
    x = 8,501.41

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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.