Home / 5,431.25-7,494.65-3,838.51

Finding the Fourth Proportional to 5,431.25, 7,494.65 and 3,838.51

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Solution

The fourth proportional to 5,431.25, 7,494.65 and 3,838.51 is: 5,296.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.25 : 7,494.65 = 3,838.51 : x
  2. Step 2: Convert to fraction form
    5,431.25/7,494.65 = 3,838.51/x
  3. Step 3: Cross multiply
    5,431.25x = 7,494.65 × 3,838.51
  4. Step 4: Simplify right side
    5,431.25x = 28,768,269.78
  5. Step 5: Solve for x
    x = 28,768,269.78/5,431.25
  6. Step 6: Final answer
    x = 5,296.80

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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.