Home / 7,458.24-11,187-1,911.72

Finding the Fourth Proportional to 7,458.24, 11,187 and 1,911.72

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Solution

The fourth proportional to 7,458.24, 11,187 and 1,911.72 is: 2,867.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,458.24 : 11,187 = 1,911.72 : x
  2. Step 2: Convert to fraction form
    7,458.24/11,187 = 1,911.72/x
  3. Step 3: Cross multiply
    7,458.24x = 11,187 × 1,911.72
  4. Step 4: Simplify right side
    7,458.24x = 21,386,411.64
  5. Step 5: Solve for x
    x = 21,386,411.64/7,458.24
  6. Step 6: Final answer
    x = 2,867.49

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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.