Home / 3,848.79-5,311.32-2,170.62

Finding the Fourth Proportional to 3,848.79, 5,311.32 and 2,170.62

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Solution

The fourth proportional to 3,848.79, 5,311.32 and 2,170.62 is: 2,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,848.79 : 5,311.32 = 2,170.62 : x
  2. Step 2: Convert to fraction form
    3,848.79/5,311.32 = 2,170.62/x
  3. Step 3: Cross multiply
    3,848.79x = 5,311.32 × 2,170.62
  4. Step 4: Simplify right side
    3,848.79x = 11,528,857.42
  5. Step 5: Solve for x
    x = 11,528,857.42/3,848.79
  6. Step 6: Final answer
    x = 2,995.45

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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.