Home / 5,190.32-7,790.52-4,909.38

Finding the Fourth Proportional to 5,190.32, 7,790.52 and 4,909.38

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Solution

The fourth proportional to 5,190.32, 7,790.52 and 4,909.38 is: 7,368.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.32 : 7,790.52 = 4,909.38 : x
  2. Step 2: Convert to fraction form
    5,190.32/7,790.52 = 4,909.38/x
  3. Step 3: Cross multiply
    5,190.32x = 7,790.52 × 4,909.38
  4. Step 4: Simplify right side
    5,190.32x = 38,246,623.08
  5. Step 5: Solve for x
    x = 38,246,623.08/5,190.32
  6. Step 6: Final answer
    x = 7,368.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.