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Finding the Fourth Proportional to 7,029.21, 9,700.29 and 3,885.38

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Solution

The fourth proportional to 7,029.21, 9,700.29 and 3,885.38 is: 5,361.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,029.21 : 9,700.29 = 3,885.38 : x
  2. Step 2: Convert to fraction form
    7,029.21/9,700.29 = 3,885.38/x
  3. Step 3: Cross multiply
    7,029.21x = 9,700.29 × 3,885.38
  4. Step 4: Simplify right side
    7,029.21x = 37,689,264.26
  5. Step 5: Solve for x
    x = 37,689,264.26/7,029.21
  6. Step 6: Final answer
    x = 5,361.81

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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.