Home / 4,926.90-7,390.42-1,640

Finding the Fourth Proportional to 4,926.90, 7,390.42 and 1,640

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Solution

The fourth proportional to 4,926.90, 7,390.42 and 1,640 is: 2,460.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,926.90 : 7,390.42 = 1,640 : x
  2. Step 2: Convert to fraction form
    4,926.90/7,390.42 = 1,640/x
  3. Step 3: Cross multiply
    4,926.90x = 7,390.42 × 1,640
  4. Step 4: Simplify right side
    4,926.90x = 12,120,288.80
  5. Step 5: Solve for x
    x = 12,120,288.80/4,926.90
  6. Step 6: Final answer
    x = 2,460.02

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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.