Home / 2,391.60-3,587.40-2,132.40

Finding the Fourth Proportional to 2,391.60, 3,587.40 and 2,132.40

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Solution

The fourth proportional to 2,391.60, 3,587.40 and 2,132.40 is: 3,198.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.60 : 3,587.40 = 2,132.40 : x
  2. Step 2: Convert to fraction form
    2,391.60/3,587.40 = 2,132.40/x
  3. Step 3: Cross multiply
    2,391.60x = 3,587.40 × 2,132.40
  4. Step 4: Simplify right side
    2,391.60x = 7,649,771.76
  5. Step 5: Solve for x
    x = 7,649,771.76/2,391.60
  6. Step 6: Final answer
    x = 3,198.60

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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.