Home / 1,899.12-2,620.92-1,113.24

Finding the Fourth Proportional to 1,899.12, 2,620.92 and 1,113.24

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Solution

The fourth proportional to 1,899.12, 2,620.92 and 1,113.24 is: 1,536.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.12 : 2,620.92 = 1,113.24 : x
  2. Step 2: Convert to fraction form
    1,899.12/2,620.92 = 1,113.24/x
  3. Step 3: Cross multiply
    1,899.12x = 2,620.92 × 1,113.24
  4. Step 4: Simplify right side
    1,899.12x = 2,917,712.98
  5. Step 5: Solve for x
    x = 2,917,712.98/1,899.12
  6. Step 6: Final answer
    x = 1,536.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.