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Finding the Fourth Proportional to 7,190.84, 9,923.88 and 4,047.32

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Solution

The fourth proportional to 7,190.84, 9,923.88 and 4,047.32 is: 5,585.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.84 : 9,923.88 = 4,047.32 : x
  2. Step 2: Convert to fraction form
    7,190.84/9,923.88 = 4,047.32/x
  3. Step 3: Cross multiply
    7,190.84x = 9,923.88 × 4,047.32
  4. Step 4: Simplify right side
    7,190.84x = 40,165,118.00
  5. Step 5: Solve for x
    x = 40,165,118.00/7,190.84
  6. Step 6: Final answer
    x = 5,585.59

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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.