Home / 1,217.60-1,827.36-1,142.08

Finding the Fourth Proportional to 1,217.60, 1,827.36 and 1,142.08

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Solution

The fourth proportional to 1,217.60, 1,827.36 and 1,142.08 is: 1,714.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.60 : 1,827.36 = 1,142.08 : x
  2. Step 2: Convert to fraction form
    1,217.60/1,827.36 = 1,142.08/x
  3. Step 3: Cross multiply
    1,217.60x = 1,827.36 × 1,142.08
  4. Step 4: Simplify right side
    1,217.60x = 2,086,991.31
  5. Step 5: Solve for x
    x = 2,086,991.31/1,217.60
  6. Step 6: Final answer
    x = 1,714.02

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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.