Home / 4,958.90-7,430.31-2,618.78

Finding the Fourth Proportional to 4,958.90, 7,430.31 and 2,618.78

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Solution

The fourth proportional to 4,958.90, 7,430.31 and 2,618.78 is: 3,923.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,958.90 : 7,430.31 = 2,618.78 : x
  2. Step 2: Convert to fraction form
    4,958.90/7,430.31 = 2,618.78/x
  3. Step 3: Cross multiply
    4,958.90x = 7,430.31 × 2,618.78
  4. Step 4: Simplify right side
    4,958.90x = 19,458,347.22
  5. Step 5: Solve for x
    x = 19,458,347.22/4,958.90
  6. Step 6: Final answer
    x = 3,923.92

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1.5x scale

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.