Home / 3,613.89-5,420.88-1,148.70

Finding the Fourth Proportional to 3,613.89, 5,420.88 and 1,148.70

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Solution

The fourth proportional to 3,613.89, 5,420.88 and 1,148.70 is: 1,723.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.89 : 5,420.88 = 1,148.70 : x
  2. Step 2: Convert to fraction form
    3,613.89/5,420.88 = 1,148.70/x
  3. Step 3: Cross multiply
    3,613.89x = 5,420.88 × 1,148.70
  4. Step 4: Simplify right side
    3,613.89x = 6,226,964.86
  5. Step 5: Solve for x
    x = 6,226,964.86/3,613.89
  6. Step 6: Final answer
    x = 1,723.06

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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.