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Finding the Fourth Proportional to 1,842.72, 2,542.80 and 1,056.60

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Solution

The fourth proportional to 1,842.72, 2,542.80 and 1,056.60 is: 1,458.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,842.72 : 2,542.80 = 1,056.60 : x
  2. Step 2: Convert to fraction form
    1,842.72/2,542.80 = 1,056.60/x
  3. Step 3: Cross multiply
    1,842.72x = 2,542.80 × 1,056.60
  4. Step 4: Simplify right side
    1,842.72x = 2,686,722.48
  5. Step 5: Solve for x
    x = 2,686,722.48/1,842.72
  6. Step 6: Final answer
    x = 1,458.02

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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.