Home / 2,990.93-4,122.50-2,150.82

Finding the Fourth Proportional to 2,990.93, 4,122.50 and 2,150.82

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Solution

The fourth proportional to 2,990.93, 4,122.50 and 2,150.82 is: 2,964.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.93 : 4,122.50 = 2,150.82 : x
  2. Step 2: Convert to fraction form
    2,990.93/4,122.50 = 2,150.82/x
  3. Step 3: Cross multiply
    2,990.93x = 4,122.50 × 2,150.82
  4. Step 4: Simplify right side
    2,990.93x = 8,866,744.70
  5. Step 5: Solve for x
    x = 8,866,744.70/2,990.93
  6. Step 6: Final answer
    x = 2,964.55

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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.