Home / 2,890.98-4,338.90-1,248.78

Finding the Fourth Proportional to 2,890.98, 4,338.90 and 1,248.78

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Solution

The fourth proportional to 2,890.98, 4,338.90 and 1,248.78 is: 1,874.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.98 : 4,338.90 = 1,248.78 : x
  2. Step 2: Convert to fraction form
    2,890.98/4,338.90 = 1,248.78/x
  3. Step 3: Cross multiply
    2,890.98x = 4,338.90 × 1,248.78
  4. Step 4: Simplify right side
    2,890.98x = 5,418,331.54
  5. Step 5: Solve for x
    x = 5,418,331.54/2,890.98
  6. Step 6: Final answer
    x = 1,874.22

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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.