Home / 3,681.20-5,081.64-2,631.44

Finding the Fourth Proportional to 3,681.20, 5,081.64 and 2,631.44

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Solution

The fourth proportional to 3,681.20, 5,081.64 and 2,631.44 is: 3,632.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.20 : 5,081.64 = 2,631.44 : x
  2. Step 2: Convert to fraction form
    3,681.20/5,081.64 = 2,631.44/x
  3. Step 3: Cross multiply
    3,681.20x = 5,081.64 × 2,631.44
  4. Step 4: Simplify right side
    3,681.20x = 13,372,030.76
  5. Step 5: Solve for x
    x = 13,372,030.76/3,681.20
  6. Step 6: Final answer
    x = 3,632.52

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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.