Home / 2,615.75-3,918.39-1,575.20

Finding the Fourth Proportional to 2,615.75, 3,918.39 and 1,575.20

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Solution

The fourth proportional to 2,615.75, 3,918.39 and 1,575.20 is: 2,359.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.75 : 3,918.39 = 1,575.20 : x
  2. Step 2: Convert to fraction form
    2,615.75/3,918.39 = 1,575.20/x
  3. Step 3: Cross multiply
    2,615.75x = 3,918.39 × 1,575.20
  4. Step 4: Simplify right side
    2,615.75x = 6,172,247.93
  5. Step 5: Solve for x
    x = 6,172,247.93/2,615.75
  6. Step 6: Final answer
    x = 2,359.65

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1.5x scale

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.