Home / 8,541.43-11,781.81-5,515.36

Finding the Fourth Proportional to 8,541.43, 11,781.81 and 5,515.36

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Solution

The fourth proportional to 8,541.43, 11,781.81 and 5,515.36 is: 7,607.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,541.43 : 11,781.81 = 5,515.36 : x
  2. Step 2: Convert to fraction form
    8,541.43/11,781.81 = 5,515.36/x
  3. Step 3: Cross multiply
    8,541.43x = 11,781.81 × 5,515.36
  4. Step 4: Simplify right side
    8,541.43x = 64,980,894.15
  5. Step 5: Solve for x
    x = 64,980,894.15/8,541.43
  6. Step 6: Final answer
    x = 7,607.73

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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.