Home / 3,031.80-4,538.86-1,778.60

Finding the Fourth Proportional to 3,031.80, 4,538.86 and 1,778.60

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Solution

The fourth proportional to 3,031.80, 4,538.86 and 1,778.60 is: 2,662.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.80 : 4,538.86 = 1,778.60 : x
  2. Step 2: Convert to fraction form
    3,031.80/4,538.86 = 1,778.60/x
  3. Step 3: Cross multiply
    3,031.80x = 4,538.86 × 1,778.60
  4. Step 4: Simplify right side
    3,031.80x = 8,072,816.40
  5. Step 5: Solve for x
    x = 8,072,816.40/3,031.80
  6. Step 6: Final answer
    x = 2,662.71

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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.