Home / 2,987.92-4,479.54-1,889.98

Finding the Fourth Proportional to 2,987.92, 4,479.54 and 1,889.98

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Solution

The fourth proportional to 2,987.92, 4,479.54 and 1,889.98 is: 2,833.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.92 : 4,479.54 = 1,889.98 : x
  2. Step 2: Convert to fraction form
    2,987.92/4,479.54 = 1,889.98/x
  3. Step 3: Cross multiply
    2,987.92x = 4,479.54 × 1,889.98
  4. Step 4: Simplify right side
    2,987.92x = 8,466,241.01
  5. Step 5: Solve for x
    x = 8,466,241.01/2,987.92
  6. Step 6: Final answer
    x = 2,833.49

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1.5x scale

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.