Home / 2,488.32-3,718.85-2,143.80

Finding the Fourth Proportional to 2,488.32, 3,718.85 and 2,143.80

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Solution

The fourth proportional to 2,488.32, 3,718.85 and 2,143.80 is: 3,203.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,488.32 : 3,718.85 = 2,143.80 : x
  2. Step 2: Convert to fraction form
    2,488.32/3,718.85 = 2,143.80/x
  3. Step 3: Cross multiply
    2,488.32x = 3,718.85 × 2,143.80
  4. Step 4: Simplify right side
    2,488.32x = 7,972,459.91
  5. Step 5: Solve for x
    x = 7,972,459.91/2,488.32
  6. Step 6: Final answer
    x = 3,203.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.