Home / 5,655.60-7,804.71-3,138.09

Finding the Fourth Proportional to 5,655.60, 7,804.71 and 3,138.09

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Solution

The fourth proportional to 5,655.60, 7,804.71 and 3,138.09 is: 4,330.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,655.60 : 7,804.71 = 3,138.09 : x
  2. Step 2: Convert to fraction form
    5,655.60/7,804.71 = 3,138.09/x
  3. Step 3: Cross multiply
    5,655.60x = 7,804.71 × 3,138.09
  4. Step 4: Simplify right side
    5,655.60x = 24,491,890.25
  5. Step 5: Solve for x
    x = 24,491,890.25/5,655.60
  6. Step 6: Final answer
    x = 4,330.56

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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.