Home / 2,886.76-4,328.34-1,242.40

Finding the Fourth Proportional to 2,886.76, 4,328.34 and 1,242.40

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Solution

The fourth proportional to 2,886.76, 4,328.34 and 1,242.40 is: 1,862.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.76 : 4,328.34 = 1,242.40 : x
  2. Step 2: Convert to fraction form
    2,886.76/4,328.34 = 1,242.40/x
  3. Step 3: Cross multiply
    2,886.76x = 4,328.34 × 1,242.40
  4. Step 4: Simplify right side
    2,886.76x = 5,377,529.62
  5. Step 5: Solve for x
    x = 5,377,529.62/2,886.76
  6. Step 6: Final answer
    x = 1,862.83

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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.