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Finding the Fourth Proportional to 5,185, 7,155.30 and 3,324.52

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Solution

The fourth proportional to 5,185, 7,155.30 and 3,324.52 is: 4,587.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185 : 7,155.30 = 3,324.52 : x
  2. Step 2: Convert to fraction form
    5,185/7,155.30 = 3,324.52/x
  3. Step 3: Cross multiply
    5,185x = 7,155.30 × 3,324.52
  4. Step 4: Simplify right side
    5,185x = 23,787,937.96
  5. Step 5: Solve for x
    x = 23,787,937.96/5,185
  6. Step 6: Final answer
    x = 4,587.84

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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.