Home / 2,987.28-4,479.10-1,341.56

Finding the Fourth Proportional to 2,987.28, 4,479.10 and 1,341.56

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Solution

The fourth proportional to 2,987.28, 4,479.10 and 1,341.56 is: 2,011.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.28 : 4,479.10 = 1,341.56 : x
  2. Step 2: Convert to fraction form
    2,987.28/4,479.10 = 1,341.56/x
  3. Step 3: Cross multiply
    2,987.28x = 4,479.10 × 1,341.56
  4. Step 4: Simplify right side
    2,987.28x = 6,008,989.24
  5. Step 5: Solve for x
    x = 6,008,989.24/2,987.28
  6. Step 6: Final answer
    x = 2,011.53

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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.