Home / 2,889.27-3,987.19-1,630.58

Finding the Fourth Proportional to 2,889.27, 3,987.19 and 1,630.58

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Solution

The fourth proportional to 2,889.27, 3,987.19 and 1,630.58 is: 2,250.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.27 : 3,987.19 = 1,630.58 : x
  2. Step 2: Convert to fraction form
    2,889.27/3,987.19 = 1,630.58/x
  3. Step 3: Cross multiply
    2,889.27x = 3,987.19 × 1,630.58
  4. Step 4: Simplify right side
    2,889.27x = 6,501,446.74
  5. Step 5: Solve for x
    x = 6,501,446.74/2,889.27
  6. Step 6: Final answer
    x = 2,250.21

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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.