Home / 1,818.76-2,508.78-1,378.36

Finding the Fourth Proportional to 1,818.76, 2,508.78 and 1,378.36

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Solution

The fourth proportional to 1,818.76, 2,508.78 and 1,378.36 is: 1,901.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.76 : 2,508.78 = 1,378.36 : x
  2. Step 2: Convert to fraction form
    1,818.76/2,508.78 = 1,378.36/x
  3. Step 3: Cross multiply
    1,818.76x = 2,508.78 × 1,378.36
  4. Step 4: Simplify right side
    1,818.76x = 3,458,002.00
  5. Step 5: Solve for x
    x = 3,458,002.00/1,818.76
  6. Step 6: Final answer
    x = 1,901.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.