Home / 2,869.20-3,961.08-2,031.12

Finding the Fourth Proportional to 2,869.20, 3,961.08 and 2,031.12

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Solution

The fourth proportional to 2,869.20, 3,961.08 and 2,031.12 is: 2,804.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.20 : 3,961.08 = 2,031.12 : x
  2. Step 2: Convert to fraction form
    2,869.20/3,961.08 = 2,031.12/x
  3. Step 3: Cross multiply
    2,869.20x = 3,961.08 × 2,031.12
  4. Step 4: Simplify right side
    2,869.20x = 8,045,428.81
  5. Step 5: Solve for x
    x = 8,045,428.81/2,869.20
  6. Step 6: Final answer
    x = 2,804.07

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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.