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Finding the Fourth Proportional to 1,562.72, 2,154.96 and 941.60

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Solution

The fourth proportional to 1,562.72, 2,154.96 and 941.60 is: 1,298.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,562.72 : 2,154.96 = 941.60 : x
  2. Step 2: Convert to fraction form
    1,562.72/2,154.96 = 941.60/x
  3. Step 3: Cross multiply
    1,562.72x = 2,154.96 × 941.60
  4. Step 4: Simplify right side
    1,562.72x = 2,029,110.34
  5. Step 5: Solve for x
    x = 2,029,110.34/1,562.72
  6. Step 6: Final answer
    x = 1,298.45

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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.