Home / 3,853.28-5,779.32-1,256.20

Finding the Fourth Proportional to 3,853.28, 5,779.32 and 1,256.20

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Solution

The fourth proportional to 3,853.28, 5,779.32 and 1,256.20 is: 1,884.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.28 : 5,779.32 = 1,256.20 : x
  2. Step 2: Convert to fraction form
    3,853.28/5,779.32 = 1,256.20/x
  3. Step 3: Cross multiply
    3,853.28x = 5,779.32 × 1,256.20
  4. Step 4: Simplify right side
    3,853.28x = 7,259,981.78
  5. Step 5: Solve for x
    x = 7,259,981.78/3,853.28
  6. Step 6: Final answer
    x = 1,884.10

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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.