Home / 5,090.70-7,634.76-1,393.15

Finding the Fourth Proportional to 5,090.70, 7,634.76 and 1,393.15

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Solution

The fourth proportional to 5,090.70, 7,634.76 and 1,393.15 is: 2,089.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,090.70 : 7,634.76 = 1,393.15 : x
  2. Step 2: Convert to fraction form
    5,090.70/7,634.76 = 1,393.15/x
  3. Step 3: Cross multiply
    5,090.70x = 7,634.76 × 1,393.15
  4. Step 4: Simplify right side
    5,090.70x = 10,636,355.90
  5. Step 5: Solve for x
    x = 10,636,355.90/5,090.70
  6. Step 6: Final answer
    x = 2,089.37

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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.