Home / 7,141.32-9,855.02-3,997.52

Finding the Fourth Proportional to 7,141.32, 9,855.02 and 3,997.52

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Solution

The fourth proportional to 7,141.32, 9,855.02 and 3,997.52 is: 5,516.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,141.32 : 9,855.02 = 3,997.52 : x
  2. Step 2: Convert to fraction form
    7,141.32/9,855.02 = 3,997.52/x
  3. Step 3: Cross multiply
    7,141.32x = 9,855.02 × 3,997.52
  4. Step 4: Simplify right side
    7,141.32x = 39,395,639.55
  5. Step 5: Solve for x
    x = 39,395,639.55/7,141.32
  6. Step 6: Final answer
    x = 5,516.58

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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.