Home / 8,518.71-11,753.09-5,160.45

Finding the Fourth Proportional to 8,518.71, 11,753.09 and 5,160.45

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Solution

The fourth proportional to 8,518.71, 11,753.09 and 5,160.45 is: 7,119.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.71 : 11,753.09 = 5,160.45 : x
  2. Step 2: Convert to fraction form
    8,518.71/11,753.09 = 5,160.45/x
  3. Step 3: Cross multiply
    8,518.71x = 11,753.09 × 5,160.45
  4. Step 4: Simplify right side
    8,518.71x = 60,651,207.49
  5. Step 5: Solve for x
    x = 60,651,207.49/8,518.71
  6. Step 6: Final answer
    x = 7,119.76

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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.