Home / 2,790.48-4,186.40-842.57

Finding the Fourth Proportional to 2,790.48, 4,186.40 and 842.57

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Solution

The fourth proportional to 2,790.48, 4,186.40 and 842.57 is: 1,264.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.48 : 4,186.40 = 842.57 : x
  2. Step 2: Convert to fraction form
    2,790.48/4,186.40 = 842.57/x
  3. Step 3: Cross multiply
    2,790.48x = 4,186.40 × 842.57
  4. Step 4: Simplify right side
    2,790.48x = 3,527,335.05
  5. Step 5: Solve for x
    x = 3,527,335.05/2,790.48
  6. Step 6: Final answer
    x = 1,264.06

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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.