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Finding the Fourth Proportional to 3,360, 5,039.40 and 1,168.74

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Solution

The fourth proportional to 3,360, 5,039.40 and 1,168.74 is: 1,752.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,360 : 5,039.40 = 1,168.74 : x
  2. Step 2: Convert to fraction form
    3,360/5,039.40 = 1,168.74/x
  3. Step 3: Cross multiply
    3,360x = 5,039.40 × 1,168.74
  4. Step 4: Simplify right side
    3,360x = 5,889,748.36
  5. Step 5: Solve for x
    x = 5,889,748.36/3,360
  6. Step 6: Final answer
    x = 1,752.90

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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.