Home / 4,687.75-7,031.69-1,225

Finding the Fourth Proportional to 4,687.75, 7,031.69 and 1,225

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Solution

The fourth proportional to 4,687.75, 7,031.69 and 1,225 is: 1,837.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,687.75 : 7,031.69 = 1,225 : x
  2. Step 2: Convert to fraction form
    4,687.75/7,031.69 = 1,225/x
  3. Step 3: Cross multiply
    4,687.75x = 7,031.69 × 1,225
  4. Step 4: Simplify right side
    4,687.75x = 8,613,820.25
  5. Step 5: Solve for x
    x = 8,613,820.25/4,687.75
  6. Step 6: Final answer
    x = 1,837.52

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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.