Home / 3,615.80-5,422.63-1,535.78

Finding the Fourth Proportional to 3,615.80, 5,422.63 and 1,535.78

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Solution

The fourth proportional to 3,615.80, 5,422.63 and 1,535.78 is: 2,303.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.80 : 5,422.63 = 1,535.78 : x
  2. Step 2: Convert to fraction form
    3,615.80/5,422.63 = 1,535.78/x
  3. Step 3: Cross multiply
    3,615.80x = 5,422.63 × 1,535.78
  4. Step 4: Simplify right side
    3,615.80x = 8,327,959.02
  5. Step 5: Solve for x
    x = 8,327,959.02/3,615.80
  6. Step 6: Final answer
    x = 2,303.22

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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.