Home / 4,069.78-5,615.67-2,390.79

Finding the Fourth Proportional to 4,069.78, 5,615.67 and 2,390.79

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Solution

The fourth proportional to 4,069.78, 5,615.67 and 2,390.79 is: 3,298.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,069.78 : 5,615.67 = 2,390.79 : x
  2. Step 2: Convert to fraction form
    4,069.78/5,615.67 = 2,390.79/x
  3. Step 3: Cross multiply
    4,069.78x = 5,615.67 × 2,390.79
  4. Step 4: Simplify right side
    4,069.78x = 13,425,887.68
  5. Step 5: Solve for x
    x = 13,425,887.68/4,069.78
  6. Step 6: Final answer
    x = 3,298.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.