Home / 2,272.24-3,135.81-1,387.99

Finding the Fourth Proportional to 2,272.24, 3,135.81 and 1,387.99

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Solution

The fourth proportional to 2,272.24, 3,135.81 and 1,387.99 is: 1,915.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.24 : 3,135.81 = 1,387.99 : x
  2. Step 2: Convert to fraction form
    2,272.24/3,135.81 = 1,387.99/x
  3. Step 3: Cross multiply
    2,272.24x = 3,135.81 × 1,387.99
  4. Step 4: Simplify right side
    2,272.24x = 4,352,472.92
  5. Step 5: Solve for x
    x = 4,352,472.92/2,272.24
  6. Step 6: Final answer
    x = 1,915.50

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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.