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Finding the Fourth Proportional to 3,590.56, 4,955.78 and 2,099.20

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Solution

The fourth proportional to 3,590.56, 4,955.78 and 2,099.20 is: 2,897.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,590.56 : 4,955.78 = 2,099.20 : x
  2. Step 2: Convert to fraction form
    3,590.56/4,955.78 = 2,099.20/x
  3. Step 3: Cross multiply
    3,590.56x = 4,955.78 × 2,099.20
  4. Step 4: Simplify right side
    3,590.56x = 10,403,173.38
  5. Step 5: Solve for x
    x = 10,403,173.38/3,590.56
  6. Step 6: Final answer
    x = 2,897.37

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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.