Home / 4,928.16-7,390.62-1,640.28

Finding the Fourth Proportional to 4,928.16, 7,390.62 and 1,640.28

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Solution

The fourth proportional to 4,928.16, 7,390.62 and 1,640.28 is: 2,459.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,928.16 : 7,390.62 = 1,640.28 : x
  2. Step 2: Convert to fraction form
    4,928.16/7,390.62 = 1,640.28/x
  3. Step 3: Cross multiply
    4,928.16x = 7,390.62 × 1,640.28
  4. Step 4: Simplify right side
    4,928.16x = 12,122,686.17
  5. Step 5: Solve for x
    x = 12,122,686.17/4,928.16
  6. Step 6: Final answer
    x = 2,459.88

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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.