Home / 6,440.20-9,663.40-3,151.50

Finding the Fourth Proportional to 6,440.20, 9,663.40 and 3,151.50

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Solution

The fourth proportional to 6,440.20, 9,663.40 and 3,151.50 is: 4,728.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,440.20 : 9,663.40 = 3,151.50 : x
  2. Step 2: Convert to fraction form
    6,440.20/9,663.40 = 3,151.50/x
  3. Step 3: Cross multiply
    6,440.20x = 9,663.40 × 3,151.50
  4. Step 4: Simplify right side
    6,440.20x = 30,454,205.10
  5. Step 5: Solve for x
    x = 30,454,205.10/6,440.20
  6. Step 6: Final answer
    x = 4,728.77

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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.