Home / 3,657.23-5,047.00-1,978.65

Finding the Fourth Proportional to 3,657.23, 5,047.00 and 1,978.65

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Solution

The fourth proportional to 3,657.23, 5,047.00 and 1,978.65 is: 2,730.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,657.23 : 5,047.00 = 1,978.65 : x
  2. Step 2: Convert to fraction form
    3,657.23/5,047.00 = 1,978.65/x
  3. Step 3: Cross multiply
    3,657.23x = 5,047.00 × 1,978.65
  4. Step 4: Simplify right side
    3,657.23x = 9,986,261.36
  5. Step 5: Solve for x
    x = 9,986,261.36/3,657.23
  6. Step 6: Final answer
    x = 2,730.55

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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.