Home / 3,946.19-5,445.66-2,153.59

Finding the Fourth Proportional to 3,946.19, 5,445.66 and 2,153.59

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Solution

The fourth proportional to 3,946.19, 5,445.66 and 2,153.59 is: 2,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.19 : 5,445.66 = 2,153.59 : x
  2. Step 2: Convert to fraction form
    3,946.19/5,445.66 = 2,153.59/x
  3. Step 3: Cross multiply
    3,946.19x = 5,445.66 × 2,153.59
  4. Step 4: Simplify right side
    3,946.19x = 11,727,691.69
  5. Step 5: Solve for x
    x = 11,727,691.69/3,946.19
  6. Step 6: Final answer
    x = 2,971.90

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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.