Home / 2,391.20-3,582.96-2,007.20

Finding the Fourth Proportional to 2,391.20, 3,582.96 and 2,007.20

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Solution

The fourth proportional to 2,391.20, 3,582.96 and 2,007.20 is: 3,007.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.20 : 3,582.96 = 2,007.20 : x
  2. Step 2: Convert to fraction form
    2,391.20/3,582.96 = 2,007.20/x
  3. Step 3: Cross multiply
    2,391.20x = 3,582.96 × 2,007.20
  4. Step 4: Simplify right side
    2,391.20x = 7,191,717.31
  5. Step 5: Solve for x
    x = 7,191,717.31/2,391.20
  6. Step 6: Final answer
    x = 3,007.58

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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.