Home / 9,111.24-13,666.80-5,212.88

Finding the Fourth Proportional to 9,111.24, 13,666.80 and 5,212.88

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Solution

The fourth proportional to 9,111.24, 13,666.80 and 5,212.88 is: 7,819.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,111.24 : 13,666.80 = 5,212.88 : x
  2. Step 2: Convert to fraction form
    9,111.24/13,666.80 = 5,212.88/x
  3. Step 3: Cross multiply
    9,111.24x = 13,666.80 × 5,212.88
  4. Step 4: Simplify right side
    9,111.24x = 71,243,388.38
  5. Step 5: Solve for x
    x = 71,243,388.38/9,111.24
  6. Step 6: Final answer
    x = 7,819.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.