Home / 7,420.32-11,118.24-3,515.04

Finding the Fourth Proportional to 7,420.32, 11,118.24 and 3,515.04

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Solution

The fourth proportional to 7,420.32, 11,118.24 and 3,515.04 is: 5,266.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.32 : 11,118.24 = 3,515.04 : x
  2. Step 2: Convert to fraction form
    7,420.32/11,118.24 = 3,515.04/x
  3. Step 3: Cross multiply
    7,420.32x = 11,118.24 × 3,515.04
  4. Step 4: Simplify right side
    7,420.32x = 39,081,058.33
  5. Step 5: Solve for x
    x = 39,081,058.33/7,420.32
  6. Step 6: Final answer
    x = 5,266.76

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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.