Home / 1,353.11-2,019.84-1,251.55

Finding the Fourth Proportional to 1,353.11, 2,019.84 and 1,251.55

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Solution

The fourth proportional to 1,353.11, 2,019.84 and 1,251.55 is: 1,868.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.11 : 2,019.84 = 1,251.55 : x
  2. Step 2: Convert to fraction form
    1,353.11/2,019.84 = 1,251.55/x
  3. Step 3: Cross multiply
    1,353.11x = 2,019.84 × 1,251.55
  4. Step 4: Simplify right side
    1,353.11x = 2,527,928.58
  5. Step 5: Solve for x
    x = 2,527,928.58/1,353.11
  6. Step 6: Final answer
    x = 1,868.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.