Home / 7,863.21-11,791.18-2,931.53

Finding the Fourth Proportional to 7,863.21, 11,791.18 and 2,931.53

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Solution

The fourth proportional to 7,863.21, 11,791.18 and 2,931.53 is: 4,395.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,863.21 : 11,791.18 = 2,931.53 : x
  2. Step 2: Convert to fraction form
    7,863.21/11,791.18 = 2,931.53/x
  3. Step 3: Cross multiply
    7,863.21x = 11,791.18 × 2,931.53
  4. Step 4: Simplify right side
    7,863.21x = 34,566,197.91
  5. Step 5: Solve for x
    x = 34,566,197.91/7,863.21
  6. Step 6: Final answer
    x = 4,395.94

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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.