Home / 3,919.28-5,877.72-1,146.16

Finding the Fourth Proportional to 3,919.28, 5,877.72 and 1,146.16

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Solution

The fourth proportional to 3,919.28, 5,877.72 and 1,146.16 is: 1,718.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.28 : 5,877.72 = 1,146.16 : x
  2. Step 2: Convert to fraction form
    3,919.28/5,877.72 = 1,146.16/x
  3. Step 3: Cross multiply
    3,919.28x = 5,877.72 × 1,146.16
  4. Step 4: Simplify right side
    3,919.28x = 6,736,807.56
  5. Step 5: Solve for x
    x = 6,736,807.56/3,919.28
  6. Step 6: Final answer
    x = 1,718.89

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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.