Home / 6,851.41-10,278.88-1,921.10

Finding the Fourth Proportional to 6,851.41, 10,278.88 and 1,921.10

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Solution

The fourth proportional to 6,851.41, 10,278.88 and 1,921.10 is: 2,882.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,851.41 : 10,278.88 = 1,921.10 : x
  2. Step 2: Convert to fraction form
    6,851.41/10,278.88 = 1,921.10/x
  3. Step 3: Cross multiply
    6,851.41x = 10,278.88 × 1,921.10
  4. Step 4: Simplify right side
    6,851.41x = 19,746,700.17
  5. Step 5: Solve for x
    x = 19,746,700.17/6,851.41
  6. Step 6: Final answer
    x = 2,882.14

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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.