Home / 1,314.65-1,815.62-1,305.56

Finding the Fourth Proportional to 1,314.65, 1,815.62 and 1,305.56

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Solution

The fourth proportional to 1,314.65, 1,815.62 and 1,305.56 is: 1,803.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314.65 : 1,815.62 = 1,305.56 : x
  2. Step 2: Convert to fraction form
    1,314.65/1,815.62 = 1,305.56/x
  3. Step 3: Cross multiply
    1,314.65x = 1,815.62 × 1,305.56
  4. Step 4: Simplify right side
    1,314.65x = 2,370,385.24
  5. Step 5: Solve for x
    x = 2,370,385.24/1,314.65
  6. Step 6: Final answer
    x = 1,803.06

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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.