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Finding the Fourth Proportional to 5,379.54, 7,424.04 and 2,989.77

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Solution

The fourth proportional to 5,379.54, 7,424.04 and 2,989.77 is: 4,126.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.54 : 7,424.04 = 2,989.77 : x
  2. Step 2: Convert to fraction form
    5,379.54/7,424.04 = 2,989.77/x
  3. Step 3: Cross multiply
    5,379.54x = 7,424.04 × 2,989.77
  4. Step 4: Simplify right side
    5,379.54x = 22,196,172.07
  5. Step 5: Solve for x
    x = 22,196,172.07/5,379.54
  6. Step 6: Final answer
    x = 4,126.04

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1.5x scale

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.