Home / 1,818.60-2,507.68-1,228.11

Finding the Fourth Proportional to 1,818.60, 2,507.68 and 1,228.11

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Solution

The fourth proportional to 1,818.60, 2,507.68 and 1,228.11 is: 1,693.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.60 : 2,507.68 = 1,228.11 : x
  2. Step 2: Convert to fraction form
    1,818.60/2,507.68 = 1,228.11/x
  3. Step 3: Cross multiply
    1,818.60x = 2,507.68 × 1,228.11
  4. Step 4: Simplify right side
    1,818.60x = 3,079,716.58
  5. Step 5: Solve for x
    x = 3,079,716.58/1,818.60
  6. Step 6: Final answer
    x = 1,693.45

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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.