Home / 3,928.55-5,420.05-2,435.93

Finding the Fourth Proportional to 3,928.55, 5,420.05 and 2,435.93

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Solution

The fourth proportional to 3,928.55, 5,420.05 and 2,435.93 is: 3,360.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.55 : 5,420.05 = 2,435.93 : x
  2. Step 2: Convert to fraction form
    3,928.55/5,420.05 = 2,435.93/x
  3. Step 3: Cross multiply
    3,928.55x = 5,420.05 × 2,435.93
  4. Step 4: Simplify right side
    3,928.55x = 13,202,862.40
  5. Step 5: Solve for x
    x = 13,202,862.40/3,928.55
  6. Step 6: Final answer
    x = 3,360.75

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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.