Home / 4,172.95-5,758.69-2,680.88

Finding the Fourth Proportional to 4,172.95, 5,758.69 and 2,680.88

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Solution

The fourth proportional to 4,172.95, 5,758.69 and 2,680.88 is: 3,699.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,172.95 : 5,758.69 = 2,680.88 : x
  2. Step 2: Convert to fraction form
    4,172.95/5,758.69 = 2,680.88/x
  3. Step 3: Cross multiply
    4,172.95x = 5,758.69 × 2,680.88
  4. Step 4: Simplify right side
    4,172.95x = 15,438,364.54
  5. Step 5: Solve for x
    x = 15,438,364.54/4,172.95
  6. Step 6: Final answer
    x = 3,699.63

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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.