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Finding the Fourth Proportional to 8,904.70, 12,284.62 and 5,365.90

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Solution

The fourth proportional to 8,904.70, 12,284.62 and 5,365.90 is: 7,402.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,904.70 : 12,284.62 = 5,365.90 : x
  2. Step 2: Convert to fraction form
    8,904.70/12,284.62 = 5,365.90/x
  3. Step 3: Cross multiply
    8,904.70x = 12,284.62 × 5,365.90
  4. Step 4: Simplify right side
    8,904.70x = 65,918,042.46
  5. Step 5: Solve for x
    x = 65,918,042.46/8,904.70
  6. Step 6: Final answer
    x = 7,402.61

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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.