Home / 1,576.31-2,173.38-985.82

Finding the Fourth Proportional to 1,576.31, 2,173.38 and 985.82

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Solution

The fourth proportional to 1,576.31, 2,173.38 and 985.82 is: 1,359.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576.31 : 2,173.38 = 985.82 : x
  2. Step 2: Convert to fraction form
    1,576.31/2,173.38 = 985.82/x
  3. Step 3: Cross multiply
    1,576.31x = 2,173.38 × 985.82
  4. Step 4: Simplify right side
    1,576.31x = 2,142,549.27
  5. Step 5: Solve for x
    x = 2,142,549.27/1,576.31
  6. Step 6: Final answer
    x = 1,359.22

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Double scale
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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.