Home / 8,908.11-12,291.81-5,131.44

Finding the Fourth Proportional to 8,908.11, 12,291.81 and 5,131.44

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Solution

The fourth proportional to 8,908.11, 12,291.81 and 5,131.44 is: 7,080.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.11 : 12,291.81 = 5,131.44 : x
  2. Step 2: Convert to fraction form
    8,908.11/12,291.81 = 5,131.44/x
  3. Step 3: Cross multiply
    8,908.11x = 12,291.81 × 5,131.44
  4. Step 4: Simplify right side
    8,908.11x = 63,074,685.51
  5. Step 5: Solve for x
    x = 63,074,685.51/8,908.11
  6. Step 6: Final answer
    x = 7,080.59

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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.