Home / 3,162.72-4,367.36-1,985.76

Finding the Fourth Proportional to 3,162.72, 4,367.36 and 1,985.76

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Solution

The fourth proportional to 3,162.72, 4,367.36 and 1,985.76 is: 2,742.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,162.72 : 4,367.36 = 1,985.76 : x
  2. Step 2: Convert to fraction form
    3,162.72/4,367.36 = 1,985.76/x
  3. Step 3: Cross multiply
    3,162.72x = 4,367.36 × 1,985.76
  4. Step 4: Simplify right side
    3,162.72x = 8,672,528.79
  5. Step 5: Solve for x
    x = 8,672,528.79/3,162.72
  6. Step 6: Final answer
    x = 2,742.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.