Home / 5,613.96-8,422.20-1,718.40

Finding the Fourth Proportional to 5,613.96, 8,422.20 and 1,718.40

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Solution

The fourth proportional to 5,613.96, 8,422.20 and 1,718.40 is: 2,577.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,613.96 : 8,422.20 = 1,718.40 : x
  2. Step 2: Convert to fraction form
    5,613.96/8,422.20 = 1,718.40/x
  3. Step 3: Cross multiply
    5,613.96x = 8,422.20 × 1,718.40
  4. Step 4: Simplify right side
    5,613.96x = 14,472,708.48
  5. Step 5: Solve for x
    x = 14,472,708.48/5,613.96
  6. Step 6: Final answer
    x = 2,577.99

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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.