Home / 4,928.16-7,420.96-3,638.64

Finding the Fourth Proportional to 4,928.16, 7,420.96 and 3,638.64

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Solution

The fourth proportional to 4,928.16, 7,420.96 and 3,638.64 is: 5,479.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,928.16 : 7,420.96 = 3,638.64 : x
  2. Step 2: Convert to fraction form
    4,928.16/7,420.96 = 3,638.64/x
  3. Step 3: Cross multiply
    4,928.16x = 7,420.96 × 3,638.64
  4. Step 4: Simplify right side
    4,928.16x = 27,002,201.89
  5. Step 5: Solve for x
    x = 27,002,201.89/4,928.16
  6. Step 6: Final answer
    x = 5,479.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.