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Finding the Fourth Proportional to 1,666.76, 2,496.37 and 972.38

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Solution

The fourth proportional to 1,666.76, 2,496.37 and 972.38 is: 1,456.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,666.76 : 2,496.37 = 972.38 : x
  2. Step 2: Convert to fraction form
    1,666.76/2,496.37 = 972.38/x
  3. Step 3: Cross multiply
    1,666.76x = 2,496.37 × 972.38
  4. Step 4: Simplify right side
    1,666.76x = 2,427,420.26
  5. Step 5: Solve for x
    x = 2,427,420.26/1,666.76
  6. Step 6: Final answer
    x = 1,456.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.