Home / 6,423.20-8,864.64-3,904.76

Finding the Fourth Proportional to 6,423.20, 8,864.64 and 3,904.76

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Solution

The fourth proportional to 6,423.20, 8,864.64 and 3,904.76 is: 5,388.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,423.20 : 8,864.64 = 3,904.76 : x
  2. Step 2: Convert to fraction form
    6,423.20/8,864.64 = 3,904.76/x
  3. Step 3: Cross multiply
    6,423.20x = 8,864.64 × 3,904.76
  4. Step 4: Simplify right side
    6,423.20x = 34,614,291.69
  5. Step 5: Solve for x
    x = 34,614,291.69/6,423.20
  6. Step 6: Final answer
    x = 5,388.95

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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.