Home / 3,890.54-5,368.98-2,318.70

Finding the Fourth Proportional to 3,890.54, 5,368.98 and 2,318.70

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Solution

The fourth proportional to 3,890.54, 5,368.98 and 2,318.70 is: 3,199.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.54 : 5,368.98 = 2,318.70 : x
  2. Step 2: Convert to fraction form
    3,890.54/5,368.98 = 2,318.70/x
  3. Step 3: Cross multiply
    3,890.54x = 5,368.98 × 2,318.70
  4. Step 4: Simplify right side
    3,890.54x = 12,449,053.93
  5. Step 5: Solve for x
    x = 12,449,053.93/3,890.54
  6. Step 6: Final answer
    x = 3,199.83

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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.