Home / 1,628.28-2,442.42-702.95

Finding the Fourth Proportional to 1,628.28, 2,442.42 and 702.95

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Solution

The fourth proportional to 1,628.28, 2,442.42 and 702.95 is: 1,054.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.28 : 2,442.42 = 702.95 : x
  2. Step 2: Convert to fraction form
    1,628.28/2,442.42 = 702.95/x
  3. Step 3: Cross multiply
    1,628.28x = 2,442.42 × 702.95
  4. Step 4: Simplify right side
    1,628.28x = 1,716,886.93
  5. Step 5: Solve for x
    x = 1,716,886.93/1,628.28
  6. Step 6: Final answer
    x = 1,054.42

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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.