Home / 8,131.48-11,215.74-4,988.92

Finding the Fourth Proportional to 8,131.48, 11,215.74 and 4,988.92

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Solution

The fourth proportional to 8,131.48, 11,215.74 and 4,988.92 is: 6,881.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.48 : 11,215.74 = 4,988.92 : x
  2. Step 2: Convert to fraction form
    8,131.48/11,215.74 = 4,988.92/x
  3. Step 3: Cross multiply
    8,131.48x = 11,215.74 × 4,988.92
  4. Step 4: Simplify right side
    8,131.48x = 55,954,429.60
  5. Step 5: Solve for x
    x = 55,954,429.60/8,131.48
  6. Step 6: Final answer
    x = 6,881.21

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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.