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Finding the Fourth Proportional to 3,590.64, 5,379.76 and 1,948.32

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Solution

The fourth proportional to 3,590.64, 5,379.76 and 1,948.32 is: 2,919.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,590.64 : 5,379.76 = 1,948.32 : x
  2. Step 2: Convert to fraction form
    3,590.64/5,379.76 = 1,948.32/x
  3. Step 3: Cross multiply
    3,590.64x = 5,379.76 × 1,948.32
  4. Step 4: Simplify right side
    3,590.64x = 10,481,494.00
  5. Step 5: Solve for x
    x = 10,481,494.00/3,590.64
  6. Step 6: Final answer
    x = 2,919.12

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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.