Home / 5,715.20-8,572.71-1,555.59

Finding the Fourth Proportional to 5,715.20, 8,572.71 and 1,555.59

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Solution

The fourth proportional to 5,715.20, 8,572.71 and 1,555.59 is: 2,333.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.20 : 8,572.71 = 1,555.59 : x
  2. Step 2: Convert to fraction form
    5,715.20/8,572.71 = 1,555.59/x
  3. Step 3: Cross multiply
    5,715.20x = 8,572.71 × 1,555.59
  4. Step 4: Simplify right side
    5,715.20x = 13,335,621.95
  5. Step 5: Solve for x
    x = 13,335,621.95/5,715.20
  6. Step 6: Final answer
    x = 2,333.36

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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.