Home / 8,908.74-12,295.36-5,131.17

Finding the Fourth Proportional to 8,908.74, 12,295.36 and 5,131.17

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Solution

The fourth proportional to 8,908.74, 12,295.36 and 5,131.17 is: 7,081.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.74 : 12,295.36 = 5,131.17 : x
  2. Step 2: Convert to fraction form
    8,908.74/12,295.36 = 5,131.17/x
  3. Step 3: Cross multiply
    8,908.74x = 12,295.36 × 5,131.17
  4. Step 4: Simplify right side
    8,908.74x = 63,089,582.37
  5. Step 5: Solve for x
    x = 63,089,582.37/8,908.74
  6. Step 6: Final answer
    x = 7,081.76

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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.