Home / 1,286.07-1,931.46-1,177.63

Finding the Fourth Proportional to 1,286.07, 1,931.46 and 1,177.63

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Solution

The fourth proportional to 1,286.07, 1,931.46 and 1,177.63 is: 1,768.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.07 : 1,931.46 = 1,177.63 : x
  2. Step 2: Convert to fraction form
    1,286.07/1,931.46 = 1,177.63/x
  3. Step 3: Cross multiply
    1,286.07x = 1,931.46 × 1,177.63
  4. Step 4: Simplify right side
    1,286.07x = 2,274,545.24
  5. Step 5: Solve for x
    x = 2,274,545.24/1,286.07
  6. Step 6: Final answer
    x = 1,768.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.