Home / 5,587.20-7,718.40-5,414.40

Finding the Fourth Proportional to 5,587.20, 7,718.40 and 5,414.40

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Solution

The fourth proportional to 5,587.20, 7,718.40 and 5,414.40 is: 7,479.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,587.20 : 7,718.40 = 5,414.40 : x
  2. Step 2: Convert to fraction form
    5,587.20/7,718.40 = 5,414.40/x
  3. Step 3: Cross multiply
    5,587.20x = 7,718.40 × 5,414.40
  4. Step 4: Simplify right side
    5,587.20x = 41,790,504.96
  5. Step 5: Solve for x
    x = 41,790,504.96/5,587.20
  6. Step 6: Final answer
    x = 7,479.69

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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.