Home / 7,146.10-9,861.51-4,002.40

Finding the Fourth Proportional to 7,146.10, 9,861.51 and 4,002.40

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Solution

The fourth proportional to 7,146.10, 9,861.51 and 4,002.40 is: 5,523.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.10 : 9,861.51 = 4,002.40 : x
  2. Step 2: Convert to fraction form
    7,146.10/9,861.51 = 4,002.40/x
  3. Step 3: Cross multiply
    7,146.10x = 9,861.51 × 4,002.40
  4. Step 4: Simplify right side
    7,146.10x = 39,469,707.62
  5. Step 5: Solve for x
    x = 39,469,707.62/7,146.10
  6. Step 6: Final answer
    x = 5,523.25

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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.