Home / 7,640.38-10,543.92-4,283.10

Finding the Fourth Proportional to 7,640.38, 10,543.92 and 4,283.10

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Solution

The fourth proportional to 7,640.38, 10,543.92 and 4,283.10 is: 5,910.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,640.38 : 10,543.92 = 4,283.10 : x
  2. Step 2: Convert to fraction form
    7,640.38/10,543.92 = 4,283.10/x
  3. Step 3: Cross multiply
    7,640.38x = 10,543.92 × 4,283.10
  4. Step 4: Simplify right side
    7,640.38x = 45,160,701.44
  5. Step 5: Solve for x
    x = 45,160,701.44/7,640.38
  6. Step 6: Final answer
    x = 5,910.80

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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.