Home / 6,440.70-9,639.45-5,663.10

Finding the Fourth Proportional to 6,440.70, 9,639.45 and 5,663.10

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Solution

The fourth proportional to 6,440.70, 9,639.45 and 5,663.10 is: 8,475.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,440.70 : 9,639.45 = 5,663.10 : x
  2. Step 2: Convert to fraction form
    6,440.70/9,639.45 = 5,663.10/x
  3. Step 3: Cross multiply
    6,440.70x = 9,639.45 × 5,663.10
  4. Step 4: Simplify right side
    6,440.70x = 54,589,169.30
  5. Step 5: Solve for x
    x = 54,589,169.30/6,440.70
  6. Step 6: Final answer
    x = 8,475.66

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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.