Home / 1,814.78-2,502.98-1,217.08

Finding the Fourth Proportional to 1,814.78, 2,502.98 and 1,217.08

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Solution

The fourth proportional to 1,814.78, 2,502.98 and 1,217.08 is: 1,678.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.78 : 2,502.98 = 1,217.08 : x
  2. Step 2: Convert to fraction form
    1,814.78/2,502.98 = 1,217.08/x
  3. Step 3: Cross multiply
    1,814.78x = 2,502.98 × 1,217.08
  4. Step 4: Simplify right side
    1,814.78x = 3,046,326.90
  5. Step 5: Solve for x
    x = 3,046,326.90/1,814.78
  6. Step 6: Final answer
    x = 1,678.62

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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.