Home / 6,299.28-8,689.68-4,178.40

Finding the Fourth Proportional to 6,299.28, 8,689.68 and 4,178.40

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Solution

The fourth proportional to 6,299.28, 8,689.68 and 4,178.40 is: 5,763.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,299.28 : 8,689.68 = 4,178.40 : x
  2. Step 2: Convert to fraction form
    6,299.28/8,689.68 = 4,178.40/x
  3. Step 3: Cross multiply
    6,299.28x = 8,689.68 × 4,178.40
  4. Step 4: Simplify right side
    6,299.28x = 36,308,958.91
  5. Step 5: Solve for x
    x = 36,308,958.91/6,299.28
  6. Step 6: Final answer
    x = 5,763.99

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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.