Home / 2,167.64-2,991.60-1,283.45

Finding the Fourth Proportional to 2,167.64, 2,991.60 and 1,283.45

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Solution

The fourth proportional to 2,167.64, 2,991.60 and 1,283.45 is: 1,771.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.64 : 2,991.60 = 1,283.45 : x
  2. Step 2: Convert to fraction form
    2,167.64/2,991.60 = 1,283.45/x
  3. Step 3: Cross multiply
    2,167.64x = 2,991.60 × 1,283.45
  4. Step 4: Simplify right side
    2,167.64x = 3,839,569.02
  5. Step 5: Solve for x
    x = 3,839,569.02/2,167.64
  6. Step 6: Final answer
    x = 1,771.31

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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.