Home / 3,992.40-5,509.62-2,313.88

Finding the Fourth Proportional to 3,992.40, 5,509.62 and 2,313.88

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Solution

The fourth proportional to 3,992.40, 5,509.62 and 2,313.88 is: 3,193.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.40 : 5,509.62 = 2,313.88 : x
  2. Step 2: Convert to fraction form
    3,992.40/5,509.62 = 2,313.88/x
  3. Step 3: Cross multiply
    3,992.40x = 5,509.62 × 2,313.88
  4. Step 4: Simplify right side
    3,992.40x = 12,748,599.53
  5. Step 5: Solve for x
    x = 12,748,599.53/3,992.40
  6. Step 6: Final answer
    x = 3,193.22

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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.