Home / 2,291.28-3,436.80-752.16

Finding the Fourth Proportional to 2,291.28, 3,436.80 and 752.16

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Solution

The fourth proportional to 2,291.28, 3,436.80 and 752.16 is: 1,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.28 : 3,436.80 = 752.16 : x
  2. Step 2: Convert to fraction form
    2,291.28/3,436.80 = 752.16/x
  3. Step 3: Cross multiply
    2,291.28x = 3,436.80 × 752.16
  4. Step 4: Simplify right side
    2,291.28x = 2,585,023.49
  5. Step 5: Solve for x
    x = 2,585,023.49/2,291.28
  6. Step 6: Final answer
    x = 1,128.20

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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.