Home / 4,990.30-6,889.62-4,436.80

Finding the Fourth Proportional to 4,990.30, 6,889.62 and 4,436.80

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Solution

The fourth proportional to 4,990.30, 6,889.62 and 4,436.80 is: 6,125.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.30 : 6,889.62 = 4,436.80 : x
  2. Step 2: Convert to fraction form
    4,990.30/6,889.62 = 4,436.80/x
  3. Step 3: Cross multiply
    4,990.30x = 6,889.62 × 4,436.80
  4. Step 4: Simplify right side
    4,990.30x = 30,567,866.02
  5. Step 5: Solve for x
    x = 30,567,866.02/4,990.30
  6. Step 6: Final answer
    x = 6,125.46

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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.