Home / 3,613.60-5,421.06-1,422.28

Finding the Fourth Proportional to 3,613.60, 5,421.06 and 1,422.28

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Solution

The fourth proportional to 3,613.60, 5,421.06 and 1,422.28 is: 2,133.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.60 : 5,421.06 = 1,422.28 : x
  2. Step 2: Convert to fraction form
    3,613.60/5,421.06 = 1,422.28/x
  3. Step 3: Cross multiply
    3,613.60x = 5,421.06 × 1,422.28
  4. Step 4: Simplify right side
    3,613.60x = 7,710,265.22
  5. Step 5: Solve for x
    x = 7,710,265.22/3,613.60
  6. Step 6: Final answer
    x = 2,133.68

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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.