Home / 3,923.40-5,883.85-1,290.30

Finding the Fourth Proportional to 3,923.40, 5,883.85 and 1,290.30

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Solution

The fourth proportional to 3,923.40, 5,883.85 and 1,290.30 is: 1,935.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.40 : 5,883.85 = 1,290.30 : x
  2. Step 2: Convert to fraction form
    3,923.40/5,883.85 = 1,290.30/x
  3. Step 3: Cross multiply
    3,923.40x = 5,883.85 × 1,290.30
  4. Step 4: Simplify right side
    3,923.40x = 7,591,931.66
  5. Step 5: Solve for x
    x = 7,591,931.66/3,923.40
  6. Step 6: Final answer
    x = 1,935.04

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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.