Home / 2,615.28-3,908.52-1,913.96

Finding the Fourth Proportional to 2,615.28, 3,908.52 and 1,913.96

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Solution

The fourth proportional to 2,615.28, 3,908.52 and 1,913.96 is: 2,860.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.28 : 3,908.52 = 1,913.96 : x
  2. Step 2: Convert to fraction form
    2,615.28/3,908.52 = 1,913.96/x
  3. Step 3: Cross multiply
    2,615.28x = 3,908.52 × 1,913.96
  4. Step 4: Simplify right side
    2,615.28x = 7,480,750.94
  5. Step 5: Solve for x
    x = 7,480,750.94/2,615.28
  6. Step 6: Final answer
    x = 2,860.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.