Home / 5,423.80-8,140.31-3,867.62

Finding the Fourth Proportional to 5,423.80, 8,140.31 and 3,867.62

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Solution

The fourth proportional to 5,423.80, 8,140.31 and 3,867.62 is: 5,804.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.80 : 8,140.31 = 3,867.62 : x
  2. Step 2: Convert to fraction form
    5,423.80/8,140.31 = 3,867.62/x
  3. Step 3: Cross multiply
    5,423.80x = 8,140.31 × 3,867.62
  4. Step 4: Simplify right side
    5,423.80x = 31,483,625.76
  5. Step 5: Solve for x
    x = 31,483,625.76/5,423.80
  6. Step 6: Final answer
    x = 5,804.72

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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.