Home / 5,515.68-7,612.72-3,159.38

Finding the Fourth Proportional to 5,515.68, 7,612.72 and 3,159.38

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Solution

The fourth proportional to 5,515.68, 7,612.72 and 3,159.38 is: 4,360.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.68 : 7,612.72 = 3,159.38 : x
  2. Step 2: Convert to fraction form
    5,515.68/7,612.72 = 3,159.38/x
  3. Step 3: Cross multiply
    5,515.68x = 7,612.72 × 3,159.38
  4. Step 4: Simplify right side
    5,515.68x = 24,051,475.31
  5. Step 5: Solve for x
    x = 24,051,475.31/5,515.68
  6. Step 6: Final answer
    x = 4,360.56

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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.