Home / 9,114.36-12,578.27-5,135.91

Finding the Fourth Proportional to 9,114.36, 12,578.27 and 5,135.91

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Solution

The fourth proportional to 9,114.36, 12,578.27 and 5,135.91 is: 7,087.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,114.36 : 12,578.27 = 5,135.91 : x
  2. Step 2: Convert to fraction form
    9,114.36/12,578.27 = 5,135.91/x
  3. Step 3: Cross multiply
    9,114.36x = 12,578.27 × 5,135.91
  4. Step 4: Simplify right side
    9,114.36x = 64,600,837.00
  5. Step 5: Solve for x
    x = 64,600,837.00/9,114.36
  6. Step 6: Final answer
    x = 7,087.81

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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.