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Finding the Fourth Proportional to 3,368.40, 5,050.80 and 1,418.40

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Solution

The fourth proportional to 3,368.40, 5,050.80 and 1,418.40 is: 2,126.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,368.40 : 5,050.80 = 1,418.40 : x
  2. Step 2: Convert to fraction form
    3,368.40/5,050.80 = 1,418.40/x
  3. Step 3: Cross multiply
    3,368.40x = 5,050.80 × 1,418.40
  4. Step 4: Simplify right side
    3,368.40x = 7,164,054.72
  5. Step 5: Solve for x
    x = 7,164,054.72/3,368.40
  6. Step 6: Final answer
    x = 2,126.84

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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.