Home / 1,990.50-2,986.13-950.58

Finding the Fourth Proportional to 1,990.50, 2,986.13 and 950.58

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Solution

The fourth proportional to 1,990.50, 2,986.13 and 950.58 is: 1,426.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.50 : 2,986.13 = 950.58 : x
  2. Step 2: Convert to fraction form
    1,990.50/2,986.13 = 950.58/x
  3. Step 3: Cross multiply
    1,990.50x = 2,986.13 × 950.58
  4. Step 4: Simplify right side
    1,990.50x = 2,838,550.70
  5. Step 5: Solve for x
    x = 2,838,550.70/1,990.50
  6. Step 6: Final answer
    x = 1,426.05

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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.