Home / 3,128.69-4,691.65-1,667.53

Finding the Fourth Proportional to 3,128.69, 4,691.65 and 1,667.53

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Solution

The fourth proportional to 3,128.69, 4,691.65 and 1,667.53 is: 2,500.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.69 : 4,691.65 = 1,667.53 : x
  2. Step 2: Convert to fraction form
    3,128.69/4,691.65 = 1,667.53/x
  3. Step 3: Cross multiply
    3,128.69x = 4,691.65 × 1,667.53
  4. Step 4: Simplify right side
    3,128.69x = 7,823,467.12
  5. Step 5: Solve for x
    x = 7,823,467.12/3,128.69
  6. Step 6: Final answer
    x = 2,500.56

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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.