Home / 1,898.56-2,618.91-1,189.16

Finding the Fourth Proportional to 1,898.56, 2,618.91 and 1,189.16

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Solution

The fourth proportional to 1,898.56, 2,618.91 and 1,189.16 is: 1,640.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.56 : 2,618.91 = 1,189.16 : x
  2. Step 2: Convert to fraction form
    1,898.56/2,618.91 = 1,189.16/x
  3. Step 3: Cross multiply
    1,898.56x = 2,618.91 × 1,189.16
  4. Step 4: Simplify right side
    1,898.56x = 3,114,303.02
  5. Step 5: Solve for x
    x = 3,114,303.02/1,898.56
  6. Step 6: Final answer
    x = 1,640.35

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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.