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Finding the Fourth Proportional to 9,348.76, 12,901.20 and 5,156.98

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Solution

The fourth proportional to 9,348.76, 12,901.20 and 5,156.98 is: 7,116.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,348.76 : 12,901.20 = 5,156.98 : x
  2. Step 2: Convert to fraction form
    9,348.76/12,901.20 = 5,156.98/x
  3. Step 3: Cross multiply
    9,348.76x = 12,901.20 × 5,156.98
  4. Step 4: Simplify right side
    9,348.76x = 66,531,230.38
  5. Step 5: Solve for x
    x = 66,531,230.38/9,348.76
  6. Step 6: Final answer
    x = 7,116.58

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Double scale
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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.