Home / 3,281.16-4,921-1,089.32

Finding the Fourth Proportional to 3,281.16, 4,921 and 1,089.32

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Solution

The fourth proportional to 3,281.16, 4,921 and 1,089.32 is: 1,633.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.16 : 4,921 = 1,089.32 : x
  2. Step 2: Convert to fraction form
    3,281.16/4,921 = 1,089.32/x
  3. Step 3: Cross multiply
    3,281.16x = 4,921 × 1,089.32
  4. Step 4: Simplify right side
    3,281.16x = 5,360,543.72
  5. Step 5: Solve for x
    x = 5,360,543.72/3,281.16
  6. Step 6: Final answer
    x = 1,633.73

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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.