Home / 2,132.64-2,941.14-1,385.88

Finding the Fourth Proportional to 2,132.64, 2,941.14 and 1,385.88

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Solution

The fourth proportional to 2,132.64, 2,941.14 and 1,385.88 is: 1,911.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.64 : 2,941.14 = 1,385.88 : x
  2. Step 2: Convert to fraction form
    2,132.64/2,941.14 = 1,385.88/x
  3. Step 3: Cross multiply
    2,132.64x = 2,941.14 × 1,385.88
  4. Step 4: Simplify right side
    2,132.64x = 4,076,067.10
  5. Step 5: Solve for x
    x = 4,076,067.10/2,132.64
  6. Step 6: Final answer
    x = 1,911.28

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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.