Home / 6,423.28-8,864.88-3,628.78

Finding the Fourth Proportional to 6,423.28, 8,864.88 and 3,628.78

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Solution

The fourth proportional to 6,423.28, 8,864.88 and 3,628.78 is: 5,008.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,423.28 : 8,864.88 = 3,628.78 : x
  2. Step 2: Convert to fraction form
    6,423.28/8,864.88 = 3,628.78/x
  3. Step 3: Cross multiply
    6,423.28x = 8,864.88 × 3,628.78
  4. Step 4: Simplify right side
    6,423.28x = 32,168,699.25
  5. Step 5: Solve for x
    x = 32,168,699.25/6,423.28
  6. Step 6: Final answer
    x = 5,008.14

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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.