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Finding the Fourth Proportional to 1,888.99, 2,606.91 and 1,181.27

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Solution

The fourth proportional to 1,888.99, 2,606.91 and 1,181.27 is: 1,630.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888.99 : 2,606.91 = 1,181.27 : x
  2. Step 2: Convert to fraction form
    1,888.99/2,606.91 = 1,181.27/x
  3. Step 3: Cross multiply
    1,888.99x = 2,606.91 × 1,181.27
  4. Step 4: Simplify right side
    1,888.99x = 3,079,464.58
  5. Step 5: Solve for x
    x = 3,079,464.58/1,888.99
  6. Step 6: Final answer
    x = 1,630.22

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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.