Home / 5,148.40-7,104.87-2,790.61

Finding the Fourth Proportional to 5,148.40, 7,104.87 and 2,790.61

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Solution

The fourth proportional to 5,148.40, 7,104.87 and 2,790.61 is: 3,851.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.40 : 7,104.87 = 2,790.61 : x
  2. Step 2: Convert to fraction form
    5,148.40/7,104.87 = 2,790.61/x
  3. Step 3: Cross multiply
    5,148.40x = 7,104.87 × 2,790.61
  4. Step 4: Simplify right side
    5,148.40x = 19,826,921.27
  5. Step 5: Solve for x
    x = 19,826,921.27/5,148.40
  6. Step 6: Final answer
    x = 3,851.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.