Home / 2,087.70-2,881.35-1,191.44

Finding the Fourth Proportional to 2,087.70, 2,881.35 and 1,191.44

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Solution

The fourth proportional to 2,087.70, 2,881.35 and 1,191.44 is: 1,644.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.70 : 2,881.35 = 1,191.44 : x
  2. Step 2: Convert to fraction form
    2,087.70/2,881.35 = 1,191.44/x
  3. Step 3: Cross multiply
    2,087.70x = 2,881.35 × 1,191.44
  4. Step 4: Simplify right side
    2,087.70x = 3,432,941.24
  5. Step 5: Solve for x
    x = 3,432,941.24/2,087.70
  6. Step 6: Final answer
    x = 1,644.37

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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.