Home / 3,100.38-4,278.21-1,756.05

Finding the Fourth Proportional to 3,100.38, 4,278.21 and 1,756.05

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Solution

The fourth proportional to 3,100.38, 4,278.21 and 1,756.05 is: 2,423.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.38 : 4,278.21 = 1,756.05 : x
  2. Step 2: Convert to fraction form
    3,100.38/4,278.21 = 1,756.05/x
  3. Step 3: Cross multiply
    3,100.38x = 4,278.21 × 1,756.05
  4. Step 4: Simplify right side
    3,100.38x = 7,512,750.67
  5. Step 5: Solve for x
    x = 7,512,750.67/3,100.38
  6. Step 6: Final answer
    x = 2,423.17

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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.