Home / 2,715.13-3,740.17-2,315.49

Finding the Fourth Proportional to 2,715.13, 3,740.17 and 2,315.49

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Solution

The fourth proportional to 2,715.13, 3,740.17 and 2,315.49 is: 3,189.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.13 : 3,740.17 = 2,315.49 : x
  2. Step 2: Convert to fraction form
    2,715.13/3,740.17 = 2,315.49/x
  3. Step 3: Cross multiply
    2,715.13x = 3,740.17 × 2,315.49
  4. Step 4: Simplify right side
    2,715.13x = 8,660,326.23
  5. Step 5: Solve for x
    x = 8,660,326.23/2,715.13
  6. Step 6: Final answer
    x = 3,189.65

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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.