Home / 5,221.95-7,822.47-3,140.81

Finding the Fourth Proportional to 5,221.95, 7,822.47 and 3,140.81

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Solution

The fourth proportional to 5,221.95, 7,822.47 and 3,140.81 is: 4,704.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.95 : 7,822.47 = 3,140.81 : x
  2. Step 2: Convert to fraction form
    5,221.95/7,822.47 = 3,140.81/x
  3. Step 3: Cross multiply
    5,221.95x = 7,822.47 × 3,140.81
  4. Step 4: Simplify right side
    5,221.95x = 24,568,852.89
  5. Step 5: Solve for x
    x = 24,568,852.89/5,221.95
  6. Step 6: Final answer
    x = 4,704.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.