Home / 2,615.15-3,921.21-1,053.88

Finding the Fourth Proportional to 2,615.15, 3,921.21 and 1,053.88

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Solution

The fourth proportional to 2,615.15, 3,921.21 and 1,053.88 is: 1,580.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.15 : 3,921.21 = 1,053.88 : x
  2. Step 2: Convert to fraction form
    2,615.15/3,921.21 = 1,053.88/x
  3. Step 3: Cross multiply
    2,615.15x = 3,921.21 × 1,053.88
  4. Step 4: Simplify right side
    2,615.15x = 4,132,474.99
  5. Step 5: Solve for x
    x = 4,132,474.99/2,615.15
  6. Step 6: Final answer
    x = 1,580.20

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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.