Home / 3,613.90-5,420.58-1,148.80

Finding the Fourth Proportional to 3,613.90, 5,420.58 and 1,148.80

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Solution

The fourth proportional to 3,613.90, 5,420.58 and 1,148.80 is: 1,723.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.90 : 5,420.58 = 1,148.80 : x
  2. Step 2: Convert to fraction form
    3,613.90/5,420.58 = 1,148.80/x
  3. Step 3: Cross multiply
    3,613.90x = 5,420.58 × 1,148.80
  4. Step 4: Simplify right side
    3,613.90x = 6,227,162.30
  5. Step 5: Solve for x
    x = 6,227,162.30/3,613.90
  6. Step 6: Final answer
    x = 1,723.11

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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.