Home / 7,149.40-10,724.18-2,990.04

Finding the Fourth Proportional to 7,149.40, 10,724.18 and 2,990.04

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Solution

The fourth proportional to 7,149.40, 10,724.18 and 2,990.04 is: 4,485.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.40 : 10,724.18 = 2,990.04 : x
  2. Step 2: Convert to fraction form
    7,149.40/10,724.18 = 2,990.04/x
  3. Step 3: Cross multiply
    7,149.40x = 10,724.18 × 2,990.04
  4. Step 4: Simplify right side
    7,149.40x = 32,065,727.17
  5. Step 5: Solve for x
    x = 32,065,727.17/7,149.40
  6. Step 6: Final answer
    x = 4,485.09

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Double scale
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Similar ratio
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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.