Home / 4,990.10-7,485.15-2,686.10

Finding the Fourth Proportional to 4,990.10, 7,485.15 and 2,686.10

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Solution

The fourth proportional to 4,990.10, 7,485.15 and 2,686.10 is: 4,029.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.10 : 7,485.15 = 2,686.10 : x
  2. Step 2: Convert to fraction form
    4,990.10/7,485.15 = 2,686.10/x
  3. Step 3: Cross multiply
    4,990.10x = 7,485.15 × 2,686.10
  4. Step 4: Simplify right side
    4,990.10x = 20,105,861.42
  5. Step 5: Solve for x
    x = 20,105,861.42/4,990.10
  6. Step 6: Final answer
    x = 4,029.15

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Half scale
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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.