Home / 3,815.30-5,265.51-3,071.72

Finding the Fourth Proportional to 3,815.30, 5,265.51 and 3,071.72

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Solution

The fourth proportional to 3,815.30, 5,265.51 and 3,071.72 is: 4,239.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.30 : 5,265.51 = 3,071.72 : x
  2. Step 2: Convert to fraction form
    3,815.30/5,265.51 = 3,071.72/x
  3. Step 3: Cross multiply
    3,815.30x = 5,265.51 × 3,071.72
  4. Step 4: Simplify right side
    3,815.30x = 16,174,174.02
  5. Step 5: Solve for x
    x = 16,174,174.02/3,815.30
  6. Step 6: Final answer
    x = 4,239.29

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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.