Home / 5,220.53-7,830.43-2,447.81

Finding the Fourth Proportional to 5,220.53, 7,830.43 and 2,447.81

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Solution

The fourth proportional to 5,220.53, 7,830.43 and 2,447.81 is: 3,671.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.53 : 7,830.43 = 2,447.81 : x
  2. Step 2: Convert to fraction form
    5,220.53/7,830.43 = 2,447.81/x
  3. Step 3: Cross multiply
    5,220.53x = 7,830.43 × 2,447.81
  4. Step 4: Simplify right side
    5,220.53x = 19,167,418.31
  5. Step 5: Solve for x
    x = 19,167,418.31/5,220.53
  6. Step 6: Final answer
    x = 3,671.55

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1.5x scale

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.