Home / 2,391.88-3,587.70-1,424.12

Finding the Fourth Proportional to 2,391.88, 3,587.70 and 1,424.12

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Solution

The fourth proportional to 2,391.88, 3,587.70 and 1,424.12 is: 2,136.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.88 : 3,587.70 = 1,424.12 : x
  2. Step 2: Convert to fraction form
    2,391.88/3,587.70 = 1,424.12/x
  3. Step 3: Cross multiply
    2,391.88x = 3,587.70 × 1,424.12
  4. Step 4: Simplify right side
    2,391.88x = 5,109,315.32
  5. Step 5: Solve for x
    x = 5,109,315.32/2,391.88
  6. Step 6: Final answer
    x = 2,136.11

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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.