Home / 6,438.24-9,641.52-3,140.70

Finding the Fourth Proportional to 6,438.24, 9,641.52 and 3,140.70

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Solution

The fourth proportional to 6,438.24, 9,641.52 and 3,140.70 is: 4,703.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438.24 : 9,641.52 = 3,140.70 : x
  2. Step 2: Convert to fraction form
    6,438.24/9,641.52 = 3,140.70/x
  3. Step 3: Cross multiply
    6,438.24x = 9,641.52 × 3,140.70
  4. Step 4: Simplify right side
    6,438.24x = 30,281,121.86
  5. Step 5: Solve for x
    x = 30,281,121.86/6,438.24
  6. Step 6: Final answer
    x = 4,703.32

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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.