Home / 7,767.12-11,651.28-2,220.48

Finding the Fourth Proportional to 7,767.12, 11,651.28 and 2,220.48

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Solution

The fourth proportional to 7,767.12, 11,651.28 and 2,220.48 is: 3,330.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,767.12 : 11,651.28 = 2,220.48 : x
  2. Step 2: Convert to fraction form
    7,767.12/11,651.28 = 2,220.48/x
  3. Step 3: Cross multiply
    7,767.12x = 11,651.28 × 2,220.48
  4. Step 4: Simplify right side
    7,767.12x = 25,871,434.21
  5. Step 5: Solve for x
    x = 25,871,434.21/7,767.12
  6. Step 6: Final answer
    x = 3,330.89

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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.