Home / 1,898.11-2,618.53-1,111.83

Finding the Fourth Proportional to 1,898.11, 2,618.53 and 1,111.83

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Solution

The fourth proportional to 1,898.11, 2,618.53 and 1,111.83 is: 1,533.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.11 : 2,618.53 = 1,111.83 : x
  2. Step 2: Convert to fraction form
    1,898.11/2,618.53 = 1,111.83/x
  3. Step 3: Cross multiply
    1,898.11x = 2,618.53 × 1,111.83
  4. Step 4: Simplify right side
    1,898.11x = 2,911,360.21
  5. Step 5: Solve for x
    x = 2,911,360.21/1,898.11
  6. Step 6: Final answer
    x = 1,533.82

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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.