Home / 5,112.93-7,056.45-2,874.90

Finding the Fourth Proportional to 5,112.93, 7,056.45 and 2,874.90

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Solution

The fourth proportional to 5,112.93, 7,056.45 and 2,874.90 is: 3,967.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.93 : 7,056.45 = 2,874.90 : x
  2. Step 2: Convert to fraction form
    5,112.93/7,056.45 = 2,874.90/x
  3. Step 3: Cross multiply
    5,112.93x = 7,056.45 × 2,874.90
  4. Step 4: Simplify right side
    5,112.93x = 20,286,588.11
  5. Step 5: Solve for x
    x = 20,286,588.11/5,112.93
  6. Step 6: Final answer
    x = 3,967.70

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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.