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Finding the Fourth Proportional to 5,682.72, 7,844.40 and 4,006.56

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Solution

The fourth proportional to 5,682.72, 7,844.40 and 4,006.56 is: 5,530.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,682.72 : 7,844.40 = 4,006.56 : x
  2. Step 2: Convert to fraction form
    5,682.72/7,844.40 = 4,006.56/x
  3. Step 3: Cross multiply
    5,682.72x = 7,844.40 × 4,006.56
  4. Step 4: Simplify right side
    5,682.72x = 31,429,059.26
  5. Step 5: Solve for x
    x = 31,429,059.26/5,682.72
  6. Step 6: Final answer
    x = 5,530.64

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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.