Home / 3,140.65-4,703.76-1,821.13

Finding the Fourth Proportional to 3,140.65, 4,703.76 and 1,821.13

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Solution

The fourth proportional to 3,140.65, 4,703.76 and 1,821.13 is: 2,727.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.65 : 4,703.76 = 1,821.13 : x
  2. Step 2: Convert to fraction form
    3,140.65/4,703.76 = 1,821.13/x
  3. Step 3: Cross multiply
    3,140.65x = 4,703.76 × 1,821.13
  4. Step 4: Simplify right side
    3,140.65x = 8,566,170.59
  5. Step 5: Solve for x
    x = 8,566,170.59/3,140.65
  6. Step 6: Final answer
    x = 2,727.51

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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.