Home / 1,808.64-2,711.52-1,231.20

Finding the Fourth Proportional to 1,808.64, 2,711.52 and 1,231.20

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Solution

The fourth proportional to 1,808.64, 2,711.52 and 1,231.20 is: 1,845.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,808.64 : 2,711.52 = 1,231.20 : x
  2. Step 2: Convert to fraction form
    1,808.64/2,711.52 = 1,231.20/x
  3. Step 3: Cross multiply
    1,808.64x = 2,711.52 × 1,231.20
  4. Step 4: Simplify right side
    1,808.64x = 3,338,423.42
  5. Step 5: Solve for x
    x = 3,338,423.42/1,808.64
  6. Step 6: Final answer
    x = 1,845.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.