Home / 8,515.88-11,750.12-5,370.24

Finding the Fourth Proportional to 8,515.88, 11,750.12 and 5,370.24

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Solution

The fourth proportional to 8,515.88, 11,750.12 and 5,370.24 is: 7,409.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.88 : 11,750.12 = 5,370.24 : x
  2. Step 2: Convert to fraction form
    8,515.88/11,750.12 = 5,370.24/x
  3. Step 3: Cross multiply
    8,515.88x = 11,750.12 × 5,370.24
  4. Step 4: Simplify right side
    8,515.88x = 63,100,964.43
  5. Step 5: Solve for x
    x = 63,100,964.43/8,515.88
  6. Step 6: Final answer
    x = 7,409.80

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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.