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Finding the Fourth Proportional to 9,761.40, 14,640.48 and 2,740.80

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Solution

The fourth proportional to 9,761.40, 14,640.48 and 2,740.80 is: 4,110.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,761.40 : 14,640.48 = 2,740.80 : x
  2. Step 2: Convert to fraction form
    9,761.40/14,640.48 = 2,740.80/x
  3. Step 3: Cross multiply
    9,761.40x = 14,640.48 × 2,740.80
  4. Step 4: Simplify right side
    9,761.40x = 40,126,627.58
  5. Step 5: Solve for x
    x = 40,126,627.58/9,761.40
  6. Step 6: Final answer
    x = 4,110.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.