Home / 2,142.60-2,956.58-1,211.08

Finding the Fourth Proportional to 2,142.60, 2,956.58 and 1,211.08

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Solution

The fourth proportional to 2,142.60, 2,956.58 and 1,211.08 is: 1,671.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.60 : 2,956.58 = 1,211.08 : x
  2. Step 2: Convert to fraction form
    2,142.60/2,956.58 = 1,211.08/x
  3. Step 3: Cross multiply
    2,142.60x = 2,956.58 × 1,211.08
  4. Step 4: Simplify right side
    2,142.60x = 3,580,654.91
  5. Step 5: Solve for x
    x = 3,580,654.91/2,142.60
  6. Step 6: Final answer
    x = 1,671.17

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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.