Home / 3,931.61-5,425.62-2,163.32

Finding the Fourth Proportional to 3,931.61, 5,425.62 and 2,163.32

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Solution

The fourth proportional to 3,931.61, 5,425.62 and 2,163.32 is: 2,985.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.61 : 5,425.62 = 2,163.32 : x
  2. Step 2: Convert to fraction form
    3,931.61/5,425.62 = 2,163.32/x
  3. Step 3: Cross multiply
    3,931.61x = 5,425.62 × 2,163.32
  4. Step 4: Simplify right side
    3,931.61x = 11,737,337.36
  5. Step 5: Solve for x
    x = 11,737,337.36/3,931.61
  6. Step 6: Final answer
    x = 2,985.38

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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.