Home / 8,681.26-11,981.01-4,905.22

Finding the Fourth Proportional to 8,681.26, 11,981.01 and 4,905.22

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Solution

The fourth proportional to 8,681.26, 11,981.01 and 4,905.22 is: 6,769.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.26 : 11,981.01 = 4,905.22 : x
  2. Step 2: Convert to fraction form
    8,681.26/11,981.01 = 4,905.22/x
  3. Step 3: Cross multiply
    8,681.26x = 11,981.01 × 4,905.22
  4. Step 4: Simplify right side
    8,681.26x = 58,769,489.87
  5. Step 5: Solve for x
    x = 58,769,489.87/8,681.26
  6. Step 6: Final answer
    x = 6,769.70

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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.