Home / 1,649.16-2,467.89-1,129.77

Finding the Fourth Proportional to 1,649.16, 2,467.89 and 1,129.77

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Solution

The fourth proportional to 1,649.16, 2,467.89 and 1,129.77 is: 1,690.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,649.16 : 2,467.89 = 1,129.77 : x
  2. Step 2: Convert to fraction form
    1,649.16/2,467.89 = 1,129.77/x
  3. Step 3: Cross multiply
    1,649.16x = 2,467.89 × 1,129.77
  4. Step 4: Simplify right side
    1,649.16x = 2,788,148.09
  5. Step 5: Solve for x
    x = 2,788,148.09/1,649.16
  6. Step 6: Final answer
    x = 1,690.65

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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.