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Finding the Fourth Proportional to 5,420.70, 7,480.53 and 3,062.84

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Solution

The fourth proportional to 5,420.70, 7,480.53 and 3,062.84 is: 4,226.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.70 : 7,480.53 = 3,062.84 : x
  2. Step 2: Convert to fraction form
    5,420.70/7,480.53 = 3,062.84/x
  3. Step 3: Cross multiply
    5,420.70x = 7,480.53 × 3,062.84
  4. Step 4: Simplify right side
    5,420.70x = 22,911,629.10
  5. Step 5: Solve for x
    x = 22,911,629.10/5,420.70
  6. Step 6: Final answer
    x = 4,226.69

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.