Home / 2,331.77-3,217.98-1,388.12

Finding the Fourth Proportional to 2,331.77, 3,217.98 and 1,388.12

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Solution

The fourth proportional to 2,331.77, 3,217.98 and 1,388.12 is: 1,915.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,331.77 : 3,217.98 = 1,388.12 : x
  2. Step 2: Convert to fraction form
    2,331.77/3,217.98 = 1,388.12/x
  3. Step 3: Cross multiply
    2,331.77x = 3,217.98 × 1,388.12
  4. Step 4: Simplify right side
    2,331.77x = 4,466,926.31
  5. Step 5: Solve for x
    x = 4,466,926.31/2,331.77
  6. Step 6: Final answer
    x = 1,915.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.