Home / 2,875.13-3,979.08-2,806.11

Finding the Fourth Proportional to 2,875.13, 3,979.08 and 2,806.11

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Solution

The fourth proportional to 2,875.13, 3,979.08 and 2,806.11 is: 3,883.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.13 : 3,979.08 = 2,806.11 : x
  2. Step 2: Convert to fraction form
    2,875.13/3,979.08 = 2,806.11/x
  3. Step 3: Cross multiply
    2,875.13x = 3,979.08 × 2,806.11
  4. Step 4: Simplify right side
    2,875.13x = 11,165,736.18
  5. Step 5: Solve for x
    x = 11,165,736.18/2,875.13
  6. Step 6: Final answer
    x = 3,883.56

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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.