Home / 5,231.79-7,219.88-2,874.08

Finding the Fourth Proportional to 5,231.79, 7,219.88 and 2,874.08

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Solution

The fourth proportional to 5,231.79, 7,219.88 and 2,874.08 is: 3,966.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.79 : 7,219.88 = 2,874.08 : x
  2. Step 2: Convert to fraction form
    5,231.79/7,219.88 = 2,874.08/x
  3. Step 3: Cross multiply
    5,231.79x = 7,219.88 × 2,874.08
  4. Step 4: Simplify right side
    5,231.79x = 20,750,516.39
  5. Step 5: Solve for x
    x = 20,750,516.39/5,231.79
  6. Step 6: Final answer
    x = 3,966.24

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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.