Home / 5,112.78-7,055.36-2,874.74

Finding the Fourth Proportional to 5,112.78, 7,055.36 and 2,874.74

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Solution

The fourth proportional to 5,112.78, 7,055.36 and 2,874.74 is: 3,966.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.78 : 7,055.36 = 2,874.74 : x
  2. Step 2: Convert to fraction form
    5,112.78/7,055.36 = 2,874.74/x
  3. Step 3: Cross multiply
    5,112.78x = 7,055.36 × 2,874.74
  4. Step 4: Simplify right side
    5,112.78x = 20,282,325.61
  5. Step 5: Solve for x
    x = 20,282,325.61/5,112.78
  6. Step 6: Final answer
    x = 3,966.99

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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.