Home / 5,138.63-7,084.85-4,193.46

Finding the Fourth Proportional to 5,138.63, 7,084.85 and 4,193.46

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Solution

The fourth proportional to 5,138.63, 7,084.85 and 4,193.46 is: 5,781.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.63 : 7,084.85 = 4,193.46 : x
  2. Step 2: Convert to fraction form
    5,138.63/7,084.85 = 4,193.46/x
  3. Step 3: Cross multiply
    5,138.63x = 7,084.85 × 4,193.46
  4. Step 4: Simplify right side
    5,138.63x = 29,710,014.11
  5. Step 5: Solve for x
    x = 29,710,014.11/5,138.63
  6. Step 6: Final answer
    x = 5,781.71

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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.