Home / 5,090.78-7,636.23-1,393.31

Finding the Fourth Proportional to 5,090.78, 7,636.23 and 1,393.31

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Solution

The fourth proportional to 5,090.78, 7,636.23 and 1,393.31 is: 2,089.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,090.78 : 7,636.23 = 1,393.31 : x
  2. Step 2: Convert to fraction form
    5,090.78/7,636.23 = 1,393.31/x
  3. Step 3: Cross multiply
    5,090.78x = 7,636.23 × 1,393.31
  4. Step 4: Simplify right side
    5,090.78x = 10,639,597.44
  5. Step 5: Solve for x
    x = 10,639,597.44/5,090.78
  6. Step 6: Final answer
    x = 2,089.98

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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.