Home / 6,424.20-9,641.70-3,140.10

Finding the Fourth Proportional to 6,424.20, 9,641.70 and 3,140.10

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Solution

The fourth proportional to 6,424.20, 9,641.70 and 3,140.10 is: 4,712.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,424.20 : 9,641.70 = 3,140.10 : x
  2. Step 2: Convert to fraction form
    6,424.20/9,641.70 = 3,140.10/x
  3. Step 3: Cross multiply
    6,424.20x = 9,641.70 × 3,140.10
  4. Step 4: Simplify right side
    6,424.20x = 30,275,902.17
  5. Step 5: Solve for x
    x = 30,275,902.17/6,424.20
  6. Step 6: Final answer
    x = 4,712.79

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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.