Home / 5,148.50-7,104.98-2,790.65

Finding the Fourth Proportional to 5,148.50, 7,104.98 and 2,790.65

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Solution

The fourth proportional to 5,148.50, 7,104.98 and 2,790.65 is: 3,851.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.50 : 7,104.98 = 2,790.65 : x
  2. Step 2: Convert to fraction form
    5,148.50/7,104.98 = 2,790.65/x
  3. Step 3: Cross multiply
    5,148.50x = 7,104.98 × 2,790.65
  4. Step 4: Simplify right side
    5,148.50x = 19,827,537.18
  5. Step 5: Solve for x
    x = 19,827,537.18/5,148.50
  6. Step 6: Final answer
    x = 3,851.13

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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.