Home / 2,167.90-2,991.45-1,283.74

Finding the Fourth Proportional to 2,167.90, 2,991.45 and 1,283.74

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Solution

The fourth proportional to 2,167.90, 2,991.45 and 1,283.74 is: 1,771.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.90 : 2,991.45 = 1,283.74 : x
  2. Step 2: Convert to fraction form
    2,167.90/2,991.45 = 1,283.74/x
  3. Step 3: Cross multiply
    2,167.90x = 2,991.45 × 1,283.74
  4. Step 4: Simplify right side
    2,167.90x = 3,840,244.02
  5. Step 5: Solve for x
    x = 3,840,244.02/2,167.90
  6. Step 6: Final answer
    x = 1,771.41

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1.5x scale

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.