Home / 5,538.13-7,640.70-3,549.79

Finding the Fourth Proportional to 5,538.13, 7,640.70 and 3,549.79

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Solution

The fourth proportional to 5,538.13, 7,640.70 and 3,549.79 is: 4,897.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,538.13 : 7,640.70 = 3,549.79 : x
  2. Step 2: Convert to fraction form
    5,538.13/7,640.70 = 3,549.79/x
  3. Step 3: Cross multiply
    5,538.13x = 7,640.70 × 3,549.79
  4. Step 4: Simplify right side
    5,538.13x = 27,122,880.45
  5. Step 5: Solve for x
    x = 27,122,880.45/5,538.13
  6. Step 6: Final answer
    x = 4,897.48

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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.