Home / 6,899.60-9,521.40-3,755.78

Finding the Fourth Proportional to 6,899.60, 9,521.40 and 3,755.78

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Solution

The fourth proportional to 6,899.60, 9,521.40 and 3,755.78 is: 5,182.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,899.60 : 9,521.40 = 3,755.78 : x
  2. Step 2: Convert to fraction form
    6,899.60/9,521.40 = 3,755.78/x
  3. Step 3: Cross multiply
    6,899.60x = 9,521.40 × 3,755.78
  4. Step 4: Simplify right side
    6,899.60x = 35,760,283.69
  5. Step 5: Solve for x
    x = 35,760,283.69/6,899.60
  6. Step 6: Final answer
    x = 5,182.95

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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.