Home / 6,721.40-10,082.10-6,116.60

Finding the Fourth Proportional to 6,721.40, 10,082.10 and 6,116.60

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Solution

The fourth proportional to 6,721.40, 10,082.10 and 6,116.60 is: 9,174.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.40 : 10,082.10 = 6,116.60 : x
  2. Step 2: Convert to fraction form
    6,721.40/10,082.10 = 6,116.60/x
  3. Step 3: Cross multiply
    6,721.40x = 10,082.10 × 6,116.60
  4. Step 4: Simplify right side
    6,721.40x = 61,668,172.86
  5. Step 5: Solve for x
    x = 61,668,172.86/6,721.40
  6. Step 6: Final answer
    x = 9,174.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.