Home / 4,928.24-7,390.78-1,640.45

Finding the Fourth Proportional to 4,928.24, 7,390.78 and 1,640.45

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Solution

The fourth proportional to 4,928.24, 7,390.78 and 1,640.45 is: 2,460.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,928.24 : 7,390.78 = 1,640.45 : x
  2. Step 2: Convert to fraction form
    4,928.24/7,390.78 = 1,640.45/x
  3. Step 3: Cross multiply
    4,928.24x = 7,390.78 × 1,640.45
  4. Step 4: Simplify right side
    4,928.24x = 12,124,219.43
  5. Step 5: Solve for x
    x = 12,124,219.43/4,928.24
  6. Step 6: Final answer
    x = 2,460.15

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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.