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Finding the Fourth Proportional to 9,353.70, 12,897.90 and 9,258.93

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Solution

The fourth proportional to 9,353.70, 12,897.90 and 9,258.93 is: 12,767.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,353.70 : 12,897.90 = 9,258.93 : x
  2. Step 2: Convert to fraction form
    9,353.70/12,897.90 = 9,258.93/x
  3. Step 3: Cross multiply
    9,353.70x = 12,897.90 × 9,258.93
  4. Step 4: Simplify right side
    9,353.70x = 119,420,753.25
  5. Step 5: Solve for x
    x = 119,420,753.25/9,353.70
  6. Step 6: Final answer
    x = 12,767.22

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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.