Home / 7,152.29-10,728.44-2,990.02

Finding the Fourth Proportional to 7,152.29, 10,728.44 and 2,990.02

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Solution

The fourth proportional to 7,152.29, 10,728.44 and 2,990.02 is: 4,485.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,152.29 : 10,728.44 = 2,990.02 : x
  2. Step 2: Convert to fraction form
    7,152.29/10,728.44 = 2,990.02/x
  3. Step 3: Cross multiply
    7,152.29x = 10,728.44 × 2,990.02
  4. Step 4: Simplify right side
    7,152.29x = 32,078,248.14
  5. Step 5: Solve for x
    x = 32,078,248.14/7,152.29
  6. Step 6: Final answer
    x = 4,485.03

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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.