Home / 2,130.84-3,195.18-724.79

Finding the Fourth Proportional to 2,130.84, 3,195.18 and 724.79

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Solution

The fourth proportional to 2,130.84, 3,195.18 and 724.79 is: 1,086.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.84 : 3,195.18 = 724.79 : x
  2. Step 2: Convert to fraction form
    2,130.84/3,195.18 = 724.79/x
  3. Step 3: Cross multiply
    2,130.84x = 3,195.18 × 724.79
  4. Step 4: Simplify right side
    2,130.84x = 2,315,823.09
  5. Step 5: Solve for x
    x = 2,315,823.09/2,130.84
  6. Step 6: Final answer
    x = 1,086.81

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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.