Home / 2,959.53-4,079.22-2,118.90

Finding the Fourth Proportional to 2,959.53, 4,079.22 and 2,118.90

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Solution

The fourth proportional to 2,959.53, 4,079.22 and 2,118.90 is: 2,920.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,959.53 : 4,079.22 = 2,118.90 : x
  2. Step 2: Convert to fraction form
    2,959.53/4,079.22 = 2,118.90/x
  3. Step 3: Cross multiply
    2,959.53x = 4,079.22 × 2,118.90
  4. Step 4: Simplify right side
    2,959.53x = 8,643,459.26
  5. Step 5: Solve for x
    x = 8,643,459.26/2,959.53
  6. Step 6: Final answer
    x = 2,920.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.