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Finding the Fourth Proportional to 1,889.84, 2,606.92 and 1,182.16

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Solution

The fourth proportional to 1,889.84, 2,606.92 and 1,182.16 is: 1,630.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.84 : 2,606.92 = 1,182.16 : x
  2. Step 2: Convert to fraction form
    1,889.84/2,606.92 = 1,182.16/x
  3. Step 3: Cross multiply
    1,889.84x = 2,606.92 × 1,182.16
  4. Step 4: Simplify right side
    1,889.84x = 3,081,796.55
  5. Step 5: Solve for x
    x = 3,081,796.55/1,889.84
  6. Step 6: Final answer
    x = 1,630.72

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1.5x scale

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.