Home / 2,591.90-3,883.95-1,186.45

Finding the Fourth Proportional to 2,591.90, 3,883.95 and 1,186.45

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Solution

The fourth proportional to 2,591.90, 3,883.95 and 1,186.45 is: 1,777.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591.90 : 3,883.95 = 1,186.45 : x
  2. Step 2: Convert to fraction form
    2,591.90/3,883.95 = 1,186.45/x
  3. Step 3: Cross multiply
    2,591.90x = 3,883.95 × 1,186.45
  4. Step 4: Simplify right side
    2,591.90x = 4,608,102.77
  5. Step 5: Solve for x
    x = 4,608,102.77/2,591.90
  6. Step 6: Final answer
    x = 1,777.89

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1.5x scale

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.