Home / 2,639.08-3,955.38-2,315.08

Finding the Fourth Proportional to 2,639.08, 3,955.38 and 2,315.08

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Solution

The fourth proportional to 2,639.08, 3,955.38 and 2,315.08 is: 3,469.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.08 : 3,955.38 = 2,315.08 : x
  2. Step 2: Convert to fraction form
    2,639.08/3,955.38 = 2,315.08/x
  3. Step 3: Cross multiply
    2,639.08x = 3,955.38 × 2,315.08
  4. Step 4: Simplify right side
    2,639.08x = 9,157,021.13
  5. Step 5: Solve for x
    x = 9,157,021.13/2,639.08
  6. Step 6: Final answer
    x = 3,469.78

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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.