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Finding the Fourth Proportional to 5,616, 7,741.60 and 4,619.57

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Solution

The fourth proportional to 5,616, 7,741.60 and 4,619.57 is: 6,368.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,616 : 7,741.60 = 4,619.57 : x
  2. Step 2: Convert to fraction form
    5,616/7,741.60 = 4,619.57/x
  3. Step 3: Cross multiply
    5,616x = 7,741.60 × 4,619.57
  4. Step 4: Simplify right side
    5,616x = 35,762,812.86
  5. Step 5: Solve for x
    x = 35,762,812.86/5,616
  6. Step 6: Final answer
    x = 6,368.02

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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.