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Finding the Fourth Proportional to 3,013.40, 4,158 and 1,893.55

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Solution

The fourth proportional to 3,013.40, 4,158 and 1,893.55 is: 2,612.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,013.40 : 4,158 = 1,893.55 : x
  2. Step 2: Convert to fraction form
    3,013.40/4,158 = 1,893.55/x
  3. Step 3: Cross multiply
    3,013.40x = 4,158 × 1,893.55
  4. Step 4: Simplify right side
    3,013.40x = 7,873,370.51
  5. Step 5: Solve for x
    x = 7,873,370.51/3,013.40
  6. Step 6: Final answer
    x = 2,612.78

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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.