Home / 6,625.20-9,140.24-3,971.60

Finding the Fourth Proportional to 6,625.20, 9,140.24 and 3,971.60

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Solution

The fourth proportional to 6,625.20, 9,140.24 and 3,971.60 is: 5,479.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,625.20 : 9,140.24 = 3,971.60 : x
  2. Step 2: Convert to fraction form
    6,625.20/9,140.24 = 3,971.60/x
  3. Step 3: Cross multiply
    6,625.20x = 9,140.24 × 3,971.60
  4. Step 4: Simplify right side
    6,625.20x = 36,301,377.18
  5. Step 5: Solve for x
    x = 36,301,377.18/6,625.20
  6. Step 6: Final answer
    x = 5,479.29

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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.