Home / 2,921.93-4,382.90-1,255.70

Finding the Fourth Proportional to 2,921.93, 4,382.90 and 1,255.70

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Solution

The fourth proportional to 2,921.93, 4,382.90 and 1,255.70 is: 1,883.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.93 : 4,382.90 = 1,255.70 : x
  2. Step 2: Convert to fraction form
    2,921.93/4,382.90 = 1,255.70/x
  3. Step 3: Cross multiply
    2,921.93x = 4,382.90 × 1,255.70
  4. Step 4: Simplify right side
    2,921.93x = 5,503,607.53
  5. Step 5: Solve for x
    x = 5,503,607.53/2,921.93
  6. Step 6: Final answer
    x = 1,883.55

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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.