Home / 1,815.19-2,505.17-1,018.64

Finding the Fourth Proportional to 1,815.19, 2,505.17 and 1,018.64

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Solution

The fourth proportional to 1,815.19, 2,505.17 and 1,018.64 is: 1,405.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.19 : 2,505.17 = 1,018.64 : x
  2. Step 2: Convert to fraction form
    1,815.19/2,505.17 = 1,018.64/x
  3. Step 3: Cross multiply
    1,815.19x = 2,505.17 × 1,018.64
  4. Step 4: Simplify right side
    1,815.19x = 2,551,867.54
  5. Step 5: Solve for x
    x = 2,551,867.54/1,815.19
  6. Step 6: Final answer
    x = 1,405.84

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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.