Home / 1,310.60-1,809.80-1,248.36

Finding the Fourth Proportional to 1,310.60, 1,809.80 and 1,248.36

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Solution

The fourth proportional to 1,310.60, 1,809.80 and 1,248.36 is: 1,723.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310.60 : 1,809.80 = 1,248.36 : x
  2. Step 2: Convert to fraction form
    1,310.60/1,809.80 = 1,248.36/x
  3. Step 3: Cross multiply
    1,310.60x = 1,809.80 × 1,248.36
  4. Step 4: Simplify right side
    1,310.60x = 2,259,281.93
  5. Step 5: Solve for x
    x = 2,259,281.93/1,310.60
  6. Step 6: Final answer
    x = 1,723.85

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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.