Home / 1,813.78-2,501.60-1,216.08

Finding the Fourth Proportional to 1,813.78, 2,501.60 and 1,216.08

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Solution

The fourth proportional to 1,813.78, 2,501.60 and 1,216.08 is: 1,677.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.78 : 2,501.60 = 1,216.08 : x
  2. Step 2: Convert to fraction form
    1,813.78/2,501.60 = 1,216.08/x
  3. Step 3: Cross multiply
    1,813.78x = 2,501.60 × 1,216.08
  4. Step 4: Simplify right side
    1,813.78x = 3,042,145.73
  5. Step 5: Solve for x
    x = 3,042,145.73/1,813.78
  6. Step 6: Final answer
    x = 1,677.24

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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.