Home / 5,091.70-7,637.58-1,393.86

Finding the Fourth Proportional to 5,091.70, 7,637.58 and 1,393.86

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Solution

The fourth proportional to 5,091.70, 7,637.58 and 1,393.86 is: 2,090.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,091.70 : 7,637.58 = 1,393.86 : x
  2. Step 2: Convert to fraction form
    5,091.70/7,637.58 = 1,393.86/x
  3. Step 3: Cross multiply
    5,091.70x = 7,637.58 × 1,393.86
  4. Step 4: Simplify right side
    5,091.70x = 10,645,717.26
  5. Step 5: Solve for x
    x = 10,645,717.26/5,091.70
  6. Step 6: Final answer
    x = 2,090.80

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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.