Home / 2,227.30-3,339.02-840.28

Finding the Fourth Proportional to 2,227.30, 3,339.02 and 840.28

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Solution

The fourth proportional to 2,227.30, 3,339.02 and 840.28 is: 1,259.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,227.30 : 3,339.02 = 840.28 : x
  2. Step 2: Convert to fraction form
    2,227.30/3,339.02 = 840.28/x
  3. Step 3: Cross multiply
    2,227.30x = 3,339.02 × 840.28
  4. Step 4: Simplify right side
    2,227.30x = 2,805,711.73
  5. Step 5: Solve for x
    x = 2,805,711.73/2,227.30
  6. Step 6: Final answer
    x = 1,259.69

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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.