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Finding the Fourth Proportional to 2,391.40, 3,587.10 and 2,247.40

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Solution

The fourth proportional to 2,391.40, 3,587.10 and 2,247.40 is: 3,371.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.40 : 3,587.10 = 2,247.40 : x
  2. Step 2: Convert to fraction form
    2,391.40/3,587.10 = 2,247.40/x
  3. Step 3: Cross multiply
    2,391.40x = 3,587.10 × 2,247.40
  4. Step 4: Simplify right side
    2,391.40x = 8,061,648.54
  5. Step 5: Solve for x
    x = 8,061,648.54/2,391.40
  6. Step 6: Final answer
    x = 3,371.10

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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.