Home / 6,985.60-9,640.24-4,001.70

Finding the Fourth Proportional to 6,985.60, 9,640.24 and 4,001.70

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Solution

The fourth proportional to 6,985.60, 9,640.24 and 4,001.70 is: 5,522.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.60 : 9,640.24 = 4,001.70 : x
  2. Step 2: Convert to fraction form
    6,985.60/9,640.24 = 4,001.70/x
  3. Step 3: Cross multiply
    6,985.60x = 9,640.24 × 4,001.70
  4. Step 4: Simplify right side
    6,985.60x = 38,577,348.41
  5. Step 5: Solve for x
    x = 38,577,348.41/6,985.60
  6. Step 6: Final answer
    x = 5,522.41

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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.