Home / 6,620.13-9,140.04-4,385.75

Finding the Fourth Proportional to 6,620.13, 9,140.04 and 4,385.75

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Solution

The fourth proportional to 6,620.13, 9,140.04 and 4,385.75 is: 6,055.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.13 : 9,140.04 = 4,385.75 : x
  2. Step 2: Convert to fraction form
    6,620.13/9,140.04 = 4,385.75/x
  3. Step 3: Cross multiply
    6,620.13x = 9,140.04 × 4,385.75
  4. Step 4: Simplify right side
    6,620.13x = 40,085,884.73
  5. Step 5: Solve for x
    x = 40,085,884.73/6,620.13
  6. Step 6: Final answer
    x = 6,055.15

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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.