Home / 2,130.20-3,195.30-591.20

Finding the Fourth Proportional to 2,130.20, 3,195.30 and 591.20

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Solution

The fourth proportional to 2,130.20, 3,195.30 and 591.20 is: 886.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.20 : 3,195.30 = 591.20 : x
  2. Step 2: Convert to fraction form
    2,130.20/3,195.30 = 591.20/x
  3. Step 3: Cross multiply
    2,130.20x = 3,195.30 × 591.20
  4. Step 4: Simplify right side
    2,130.20x = 1,889,061.36
  5. Step 5: Solve for x
    x = 1,889,061.36/2,130.20
  6. Step 6: Final answer
    x = 886.80

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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.