Home / 7,824.16-11,731.58-3,146.40

Finding the Fourth Proportional to 7,824.16, 11,731.58 and 3,146.40

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Solution

The fourth proportional to 7,824.16, 11,731.58 and 3,146.40 is: 4,717.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,824.16 : 11,731.58 = 3,146.40 : x
  2. Step 2: Convert to fraction form
    7,824.16/11,731.58 = 3,146.40/x
  3. Step 3: Cross multiply
    7,824.16x = 11,731.58 × 3,146.40
  4. Step 4: Simplify right side
    7,824.16x = 36,912,243.31
  5. Step 5: Solve for x
    x = 36,912,243.31/7,824.16
  6. Step 6: Final answer
    x = 4,717.73

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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.