Home / 2,878.08-4,313.28-2,141.76

Finding the Fourth Proportional to 2,878.08, 4,313.28 and 2,141.76

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Solution

The fourth proportional to 2,878.08, 4,313.28 and 2,141.76 is: 3,209.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.08 : 4,313.28 = 2,141.76 : x
  2. Step 2: Convert to fraction form
    2,878.08/4,313.28 = 2,141.76/x
  3. Step 3: Cross multiply
    2,878.08x = 4,313.28 × 2,141.76
  4. Step 4: Simplify right side
    2,878.08x = 9,238,010.57
  5. Step 5: Solve for x
    x = 9,238,010.57/2,878.08
  6. Step 6: Final answer
    x = 3,209.78

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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.