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Finding the Fourth Proportional to 3,394.36, 4,684.52 and 1,978.18

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Solution

The fourth proportional to 3,394.36, 4,684.52 and 1,978.18 is: 2,730.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,394.36 : 4,684.52 = 1,978.18 : x
  2. Step 2: Convert to fraction form
    3,394.36/4,684.52 = 1,978.18/x
  3. Step 3: Cross multiply
    3,394.36x = 4,684.52 × 1,978.18
  4. Step 4: Simplify right side
    3,394.36x = 9,266,823.77
  5. Step 5: Solve for x
    x = 9,266,823.77/3,394.36
  6. Step 6: Final answer
    x = 2,730.07

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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.