Home / 7,028.96-9,700.08-3,885.28

Finding the Fourth Proportional to 7,028.96, 9,700.08 and 3,885.28

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Solution

The fourth proportional to 7,028.96, 9,700.08 and 3,885.28 is: 5,361.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,028.96 : 9,700.08 = 3,885.28 : x
  2. Step 2: Convert to fraction form
    7,028.96/9,700.08 = 3,885.28/x
  3. Step 3: Cross multiply
    7,028.96x = 9,700.08 × 3,885.28
  4. Step 4: Simplify right side
    7,028.96x = 37,687,526.82
  5. Step 5: Solve for x
    x = 37,687,526.82/7,028.96
  6. Step 6: Final answer
    x = 5,361.75

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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.