Home / 2,253.16-3,381.90-1,280.08

Finding the Fourth Proportional to 2,253.16, 3,381.90 and 1,280.08

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Solution

The fourth proportional to 2,253.16, 3,381.90 and 1,280.08 is: 1,921.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,253.16 : 3,381.90 = 1,280.08 : x
  2. Step 2: Convert to fraction form
    2,253.16/3,381.90 = 1,280.08/x
  3. Step 3: Cross multiply
    2,253.16x = 3,381.90 × 1,280.08
  4. Step 4: Simplify right side
    2,253.16x = 4,329,102.55
  5. Step 5: Solve for x
    x = 4,329,102.55/2,253.16
  6. Step 6: Final answer
    x = 1,921.35

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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.