Home / 2,390.21-3,582.75-1,155.92

Finding the Fourth Proportional to 2,390.21, 3,582.75 and 1,155.92

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Solution

The fourth proportional to 2,390.21, 3,582.75 and 1,155.92 is: 1,732.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.21 : 3,582.75 = 1,155.92 : x
  2. Step 2: Convert to fraction form
    2,390.21/3,582.75 = 1,155.92/x
  3. Step 3: Cross multiply
    2,390.21x = 3,582.75 × 1,155.92
  4. Step 4: Simplify right side
    2,390.21x = 4,141,374.89
  5. Step 5: Solve for x
    x = 4,141,374.89/2,390.21
  6. Step 6: Final answer
    x = 1,732.64

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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.