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Finding the Fourth Proportional to 3,458.99, 5,184.63 and 1,378.46

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Solution

The fourth proportional to 3,458.99, 5,184.63 and 1,378.46 is: 2,066.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,458.99 : 5,184.63 = 1,378.46 : x
  2. Step 2: Convert to fraction form
    3,458.99/5,184.63 = 1,378.46/x
  3. Step 3: Cross multiply
    3,458.99x = 5,184.63 × 1,378.46
  4. Step 4: Simplify right side
    3,458.99x = 7,146,785.45
  5. Step 5: Solve for x
    x = 7,146,785.45/3,458.99
  6. Step 6: Final answer
    x = 2,066.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.