Home / 7,134.24-9,846.18-3,990.36

Finding the Fourth Proportional to 7,134.24, 9,846.18 and 3,990.36

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Solution

The fourth proportional to 7,134.24, 9,846.18 and 3,990.36 is: 5,507.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,134.24 : 9,846.18 = 3,990.36 : x
  2. Step 2: Convert to fraction form
    7,134.24/9,846.18 = 3,990.36/x
  3. Step 3: Cross multiply
    7,134.24x = 9,846.18 × 3,990.36
  4. Step 4: Simplify right side
    7,134.24x = 39,289,802.82
  5. Step 5: Solve for x
    x = 39,289,802.82/7,134.24
  6. Step 6: Final answer
    x = 5,507.22

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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.