Home / 7,938.24-11,903.04-3,320.16

Finding the Fourth Proportional to 7,938.24, 11,903.04 and 3,320.16

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Solution

The fourth proportional to 7,938.24, 11,903.04 and 3,320.16 is: 4,978.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.24 : 11,903.04 = 3,320.16 : x
  2. Step 2: Convert to fraction form
    7,938.24/11,903.04 = 3,320.16/x
  3. Step 3: Cross multiply
    7,938.24x = 11,903.04 × 3,320.16
  4. Step 4: Simplify right side
    7,938.24x = 39,519,997.29
  5. Step 5: Solve for x
    x = 39,519,997.29/7,938.24
  6. Step 6: Final answer
    x = 4,978.43

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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.