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Finding the Fourth Proportional to 1,331.93, 1,835.17 and 889.06

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Solution

The fourth proportional to 1,331.93, 1,835.17 and 889.06 is: 1,224.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.93 : 1,835.17 = 889.06 : x
  2. Step 2: Convert to fraction form
    1,331.93/1,835.17 = 889.06/x
  3. Step 3: Cross multiply
    1,331.93x = 1,835.17 × 889.06
  4. Step 4: Simplify right side
    1,331.93x = 1,631,576.24
  5. Step 5: Solve for x
    x = 1,631,576.24/1,331.93
  6. Step 6: Final answer
    x = 1,224.97

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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.