Home / 3,559.65-4,912.31-1,987.74

Finding the Fourth Proportional to 3,559.65, 4,912.31 and 1,987.74

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Solution

The fourth proportional to 3,559.65, 4,912.31 and 1,987.74 is: 2,743.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,559.65 : 4,912.31 = 1,987.74 : x
  2. Step 2: Convert to fraction form
    3,559.65/4,912.31 = 1,987.74/x
  3. Step 3: Cross multiply
    3,559.65x = 4,912.31 × 1,987.74
  4. Step 4: Simplify right side
    3,559.65x = 9,764,385.14
  5. Step 5: Solve for x
    x = 9,764,385.14/3,559.65
  6. Step 6: Final answer
    x = 2,743.07

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1.5x scale

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.