Home / 5,320.38-7,980.48-1,622.64

Finding the Fourth Proportional to 5,320.38, 7,980.48 and 1,622.64

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Solution

The fourth proportional to 5,320.38, 7,980.48 and 1,622.64 is: 2,433.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.38 : 7,980.48 = 1,622.64 : x
  2. Step 2: Convert to fraction form
    5,320.38/7,980.48 = 1,622.64/x
  3. Step 3: Cross multiply
    5,320.38x = 7,980.48 × 1,622.64
  4. Step 4: Simplify right side
    5,320.38x = 12,949,446.07
  5. Step 5: Solve for x
    x = 12,949,446.07/5,320.38
  6. Step 6: Final answer
    x = 2,433.93

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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.