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Finding the Fourth Proportional to 5,347.63, 7,379.57 and 2,989.77

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Solution

The fourth proportional to 5,347.63, 7,379.57 and 2,989.77 is: 4,125.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,347.63 : 7,379.57 = 2,989.77 : x
  2. Step 2: Convert to fraction form
    5,347.63/7,379.57 = 2,989.77/x
  3. Step 3: Cross multiply
    5,347.63x = 7,379.57 × 2,989.77
  4. Step 4: Simplify right side
    5,347.63x = 22,063,196.80
  5. Step 5: Solve for x
    x = 22,063,196.80/5,347.63
  6. Step 6: Final answer
    x = 4,125.79

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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.