Home / 2,919.24-4,380.48-2,689.20

Finding the Fourth Proportional to 2,919.24, 4,380.48 and 2,689.20

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Solution

The fourth proportional to 2,919.24, 4,380.48 and 2,689.20 is: 4,035.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.24 : 4,380.48 = 2,689.20 : x
  2. Step 2: Convert to fraction form
    2,919.24/4,380.48 = 2,689.20/x
  3. Step 3: Cross multiply
    2,919.24x = 4,380.48 × 2,689.20
  4. Step 4: Simplify right side
    2,919.24x = 11,779,986.82
  5. Step 5: Solve for x
    x = 11,779,986.82/2,919.24
  6. Step 6: Final answer
    x = 4,035.29

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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.