Home / 3,615.52-5,421.38-1,275.08

Finding the Fourth Proportional to 3,615.52, 5,421.38 and 1,275.08

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Solution

The fourth proportional to 3,615.52, 5,421.38 and 1,275.08 is: 1,911.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.52 : 5,421.38 = 1,275.08 : x
  2. Step 2: Convert to fraction form
    3,615.52/5,421.38 = 1,275.08/x
  3. Step 3: Cross multiply
    3,615.52x = 5,421.38 × 1,275.08
  4. Step 4: Simplify right side
    3,615.52x = 6,912,693.21
  5. Step 5: Solve for x
    x = 6,912,693.21/3,615.52
  6. Step 6: Final answer
    x = 1,911.95

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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.