Home / 9,312.82-12,851.90-5,121.07

Finding the Fourth Proportional to 9,312.82, 12,851.90 and 5,121.07

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Solution

The fourth proportional to 9,312.82, 12,851.90 and 5,121.07 is: 7,067.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,312.82 : 12,851.90 = 5,121.07 : x
  2. Step 2: Convert to fraction form
    9,312.82/12,851.90 = 5,121.07/x
  3. Step 3: Cross multiply
    9,312.82x = 12,851.90 × 5,121.07
  4. Step 4: Simplify right side
    9,312.82x = 65,815,441.00
  5. Step 5: Solve for x
    x = 65,815,441.00/9,312.82
  6. Step 6: Final answer
    x = 7,067.19

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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.