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Finding the Fourth Proportional to 1,673.70, 2,311.65 and 1,576.50

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Solution

The fourth proportional to 1,673.70, 2,311.65 and 1,576.50 is: 2,177.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673.70 : 2,311.65 = 1,576.50 : x
  2. Step 2: Convert to fraction form
    1,673.70/2,311.65 = 1,576.50/x
  3. Step 3: Cross multiply
    1,673.70x = 2,311.65 × 1,576.50
  4. Step 4: Simplify right side
    1,673.70x = 3,644,316.23
  5. Step 5: Solve for x
    x = 3,644,316.23/1,673.70
  6. Step 6: Final answer
    x = 2,177.40

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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.