Home / 5,230.74-7,218.40-2,840.70

Finding the Fourth Proportional to 5,230.74, 7,218.40 and 2,840.70

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Solution

The fourth proportional to 5,230.74, 7,218.40 and 2,840.70 is: 3,920.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230.74 : 7,218.40 = 2,840.70 : x
  2. Step 2: Convert to fraction form
    5,230.74/7,218.40 = 2,840.70/x
  3. Step 3: Cross multiply
    5,230.74x = 7,218.40 × 2,840.70
  4. Step 4: Simplify right side
    5,230.74x = 20,505,290.83
  5. Step 5: Solve for x
    x = 20,505,290.83/5,230.74
  6. Step 6: Final answer
    x = 3,920.15

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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.