Home / 1,548.68-2,134.98-1,311.66

Finding the Fourth Proportional to 1,548.68, 2,134.98 and 1,311.66

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Solution

The fourth proportional to 1,548.68, 2,134.98 and 1,311.66 is: 1,808.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.68 : 2,134.98 = 1,311.66 : x
  2. Step 2: Convert to fraction form
    1,548.68/2,134.98 = 1,311.66/x
  3. Step 3: Cross multiply
    1,548.68x = 2,134.98 × 1,311.66
  4. Step 4: Simplify right side
    1,548.68x = 2,800,367.87
  5. Step 5: Solve for x
    x = 2,800,367.87/1,548.68
  6. Step 6: Final answer
    x = 1,808.23

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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.