Home / 1,348.11-1,860.63-1,286.55

Finding the Fourth Proportional to 1,348.11, 1,860.63 and 1,286.55

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Solution

The fourth proportional to 1,348.11, 1,860.63 and 1,286.55 is: 1,775.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.11 : 1,860.63 = 1,286.55 : x
  2. Step 2: Convert to fraction form
    1,348.11/1,860.63 = 1,286.55/x
  3. Step 3: Cross multiply
    1,348.11x = 1,860.63 × 1,286.55
  4. Step 4: Simplify right side
    1,348.11x = 2,393,777.79
  5. Step 5: Solve for x
    x = 2,393,777.79/1,348.11
  6. Step 6: Final answer
    x = 1,775.66

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1.5x scale

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.