Home / 6,478.76-9,720.18-2,318.69

Finding the Fourth Proportional to 6,478.76, 9,720.18 and 2,318.69

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Solution

The fourth proportional to 6,478.76, 9,720.18 and 2,318.69 is: 3,478.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,478.76 : 9,720.18 = 2,318.69 : x
  2. Step 2: Convert to fraction form
    6,478.76/9,720.18 = 2,318.69/x
  3. Step 3: Cross multiply
    6,478.76x = 9,720.18 × 2,318.69
  4. Step 4: Simplify right side
    6,478.76x = 22,538,035.56
  5. Step 5: Solve for x
    x = 22,538,035.56/6,478.76
  6. Step 6: Final answer
    x = 3,478.76

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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.