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Finding the Fourth Proportional to 7,190.88, 9,923.60 and 4,047.18

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Solution

The fourth proportional to 7,190.88, 9,923.60 and 4,047.18 is: 5,585.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.88 : 9,923.60 = 4,047.18 : x
  2. Step 2: Convert to fraction form
    7,190.88/9,923.60 = 4,047.18/x
  3. Step 3: Cross multiply
    7,190.88x = 9,923.60 × 4,047.18
  4. Step 4: Simplify right side
    7,190.88x = 40,162,595.45
  5. Step 5: Solve for x
    x = 40,162,595.45/7,190.88
  6. Step 6: Final answer
    x = 5,585.21

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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.