Home / 2,715.11-3,749.15-1,722.15

Finding the Fourth Proportional to 2,715.11, 3,749.15 and 1,722.15

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Solution

The fourth proportional to 2,715.11, 3,749.15 and 1,722.15 is: 2,378.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.11 : 3,749.15 = 1,722.15 : x
  2. Step 2: Convert to fraction form
    2,715.11/3,749.15 = 1,722.15/x
  3. Step 3: Cross multiply
    2,715.11x = 3,749.15 × 1,722.15
  4. Step 4: Simplify right side
    2,715.11x = 6,456,598.67
  5. Step 5: Solve for x
    x = 6,456,598.67/2,715.11
  6. Step 6: Final answer
    x = 2,378.02

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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.