Home / 2,615.68-3,921.60-1,461.76

Finding the Fourth Proportional to 2,615.68, 3,921.60 and 1,461.76

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Solution

The fourth proportional to 2,615.68, 3,921.60 and 1,461.76 is: 2,191.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.68 : 3,921.60 = 1,461.76 : x
  2. Step 2: Convert to fraction form
    2,615.68/3,921.60 = 1,461.76/x
  3. Step 3: Cross multiply
    2,615.68x = 3,921.60 × 1,461.76
  4. Step 4: Simplify right side
    2,615.68x = 5,732,438.02
  5. Step 5: Solve for x
    x = 5,732,438.02/2,615.68
  6. Step 6: Final answer
    x = 2,191.57

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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.