Home / 6,145.92-8,478.68-4,155.76

Finding the Fourth Proportional to 6,145.92, 8,478.68 and 4,155.76

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Solution

The fourth proportional to 6,145.92, 8,478.68 and 4,155.76 is: 5,733.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,145.92 : 8,478.68 = 4,155.76 : x
  2. Step 2: Convert to fraction form
    6,145.92/8,478.68 = 4,155.76/x
  3. Step 3: Cross multiply
    6,145.92x = 8,478.68 × 4,155.76
  4. Step 4: Simplify right side
    6,145.92x = 35,235,359.20
  5. Step 5: Solve for x
    x = 35,235,359.20/6,145.92
  6. Step 6: Final answer
    x = 5,733.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.