Home / 1,897.85-2,619.66-1,111.88

Finding the Fourth Proportional to 1,897.85, 2,619.66 and 1,111.88

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Solution

The fourth proportional to 1,897.85, 2,619.66 and 1,111.88 is: 1,534.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,897.85 : 2,619.66 = 1,111.88 : x
  2. Step 2: Convert to fraction form
    1,897.85/2,619.66 = 1,111.88/x
  3. Step 3: Cross multiply
    1,897.85x = 2,619.66 × 1,111.88
  4. Step 4: Simplify right side
    1,897.85x = 2,912,734.46
  5. Step 5: Solve for x
    x = 2,912,734.46/1,897.85
  6. Step 6: Final answer
    x = 1,534.76

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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.