Home / 5,382.96-7,412.40-4,990.92

Finding the Fourth Proportional to 5,382.96, 7,412.40 and 4,990.92

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Solution

The fourth proportional to 5,382.96, 7,412.40 and 4,990.92 is: 6,872.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,382.96 : 7,412.40 = 4,990.92 : x
  2. Step 2: Convert to fraction form
    5,382.96/7,412.40 = 4,990.92/x
  3. Step 3: Cross multiply
    5,382.96x = 7,412.40 × 4,990.92
  4. Step 4: Simplify right side
    5,382.96x = 36,994,695.41
  5. Step 5: Solve for x
    x = 36,994,695.41/5,382.96
  6. Step 6: Final answer
    x = 6,872.56

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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.