Home / 1,818.64-2,508.60-1,321.84

Finding the Fourth Proportional to 1,818.64, 2,508.60 and 1,321.84

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Solution

The fourth proportional to 1,818.64, 2,508.60 and 1,321.84 is: 1,823.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.64 : 2,508.60 = 1,321.84 : x
  2. Step 2: Convert to fraction form
    1,818.64/2,508.60 = 1,321.84/x
  3. Step 3: Cross multiply
    1,818.64x = 2,508.60 × 1,321.84
  4. Step 4: Simplify right side
    1,818.64x = 3,315,967.82
  5. Step 5: Solve for x
    x = 3,315,967.82/1,818.64
  6. Step 6: Final answer
    x = 1,823.32

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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.