Home / 3,923.40-5,870.70-3,577.80

Finding the Fourth Proportional to 3,923.40, 5,870.70 and 3,577.80

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Solution

The fourth proportional to 3,923.40, 5,870.70 and 3,577.80 is: 5,353.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.40 : 5,870.70 = 3,577.80 : x
  2. Step 2: Convert to fraction form
    3,923.40/5,870.70 = 3,577.80/x
  3. Step 3: Cross multiply
    3,923.40x = 5,870.70 × 3,577.80
  4. Step 4: Simplify right side
    3,923.40x = 21,004,190.46
  5. Step 5: Solve for x
    x = 21,004,190.46/3,923.40
  6. Step 6: Final answer
    x = 5,353.57

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1.5x scale

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.