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Finding the Fourth Proportional to 7,055.60, 9,737.10 and 3,911.99

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Solution

The fourth proportional to 7,055.60, 9,737.10 and 3,911.99 is: 5,398.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,055.60 : 9,737.10 = 3,911.99 : x
  2. Step 2: Convert to fraction form
    7,055.60/9,737.10 = 3,911.99/x
  3. Step 3: Cross multiply
    7,055.60x = 9,737.10 × 3,911.99
  4. Step 4: Simplify right side
    7,055.60x = 38,091,418.27
  5. Step 5: Solve for x
    x = 38,091,418.27/7,055.60
  6. Step 6: Final answer
    x = 5,398.75

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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.