Home / 3,281.60-4,920.51-1,089.74

Finding the Fourth Proportional to 3,281.60, 4,920.51 and 1,089.74

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Solution

The fourth proportional to 3,281.60, 4,920.51 and 1,089.74 is: 1,633.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.60 : 4,920.51 = 1,089.74 : x
  2. Step 2: Convert to fraction form
    3,281.60/4,920.51 = 1,089.74/x
  3. Step 3: Cross multiply
    3,281.60x = 4,920.51 × 1,089.74
  4. Step 4: Simplify right side
    3,281.60x = 5,362,076.57
  5. Step 5: Solve for x
    x = 5,362,076.57/3,281.60
  6. Step 6: Final answer
    x = 1,633.98

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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.