Home / 3,928.50-5,420.12-2,602.94

Finding the Fourth Proportional to 3,928.50, 5,420.12 and 2,602.94

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Solution

The fourth proportional to 3,928.50, 5,420.12 and 2,602.94 is: 3,591.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.50 : 5,420.12 = 2,602.94 : x
  2. Step 2: Convert to fraction form
    3,928.50/5,420.12 = 2,602.94/x
  3. Step 3: Cross multiply
    3,928.50x = 5,420.12 × 2,602.94
  4. Step 4: Simplify right side
    3,928.50x = 14,108,207.04
  5. Step 5: Solve for x
    x = 14,108,207.04/3,928.50
  6. Step 6: Final answer
    x = 3,591.25

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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.