Home / 3,420.72-5,132.70-1,860.66

Finding the Fourth Proportional to 3,420.72, 5,132.70 and 1,860.66

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Solution

The fourth proportional to 3,420.72, 5,132.70 and 1,860.66 is: 2,791.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.72 : 5,132.70 = 1,860.66 : x
  2. Step 2: Convert to fraction form
    3,420.72/5,132.70 = 1,860.66/x
  3. Step 3: Cross multiply
    3,420.72x = 5,132.70 × 1,860.66
  4. Step 4: Simplify right side
    3,420.72x = 9,550,209.58
  5. Step 5: Solve for x
    x = 9,550,209.58/3,420.72
  6. Step 6: Final answer
    x = 2,791.87

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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.