Home / 5,715.28-8,575.80-2,429.20

Finding the Fourth Proportional to 5,715.28, 8,575.80 and 2,429.20

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Solution

The fourth proportional to 5,715.28, 8,575.80 and 2,429.20 is: 3,645.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.28 : 8,575.80 = 2,429.20 : x
  2. Step 2: Convert to fraction form
    5,715.28/8,575.80 = 2,429.20/x
  3. Step 3: Cross multiply
    5,715.28x = 8,575.80 × 2,429.20
  4. Step 4: Simplify right side
    5,715.28x = 20,832,333.36
  5. Step 5: Solve for x
    x = 20,832,333.36/5,715.28
  6. Step 6: Final answer
    x = 3,645.02

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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.