Home / 5,521.54-7,617.78-3,131.16

Finding the Fourth Proportional to 5,521.54, 7,617.78 and 3,131.16

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Solution

The fourth proportional to 5,521.54, 7,617.78 and 3,131.16 is: 4,319.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,521.54 : 7,617.78 = 3,131.16 : x
  2. Step 2: Convert to fraction form
    5,521.54/7,617.78 = 3,131.16/x
  3. Step 3: Cross multiply
    5,521.54x = 7,617.78 × 3,131.16
  4. Step 4: Simplify right side
    5,521.54x = 23,852,449.94
  5. Step 5: Solve for x
    x = 23,852,449.94/5,521.54
  6. Step 6: Final answer
    x = 4,319.89

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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.