Home / 5,178.19-7,137.37-3,663.80

Finding the Fourth Proportional to 5,178.19, 7,137.37 and 3,663.80

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Solution

The fourth proportional to 5,178.19, 7,137.37 and 3,663.80 is: 5,050.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.19 : 7,137.37 = 3,663.80 : x
  2. Step 2: Convert to fraction form
    5,178.19/7,137.37 = 3,663.80/x
  3. Step 3: Cross multiply
    5,178.19x = 7,137.37 × 3,663.80
  4. Step 4: Simplify right side
    5,178.19x = 26,149,851.36
  5. Step 5: Solve for x
    x = 26,149,851.36/5,178.19
  6. Step 6: Final answer
    x = 5,050.00

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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.