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Finding the Fourth Proportional to 2,530.08, 3,795.12 and 990

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Solution

The fourth proportional to 2,530.08, 3,795.12 and 990 is: 1,485

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,530.08 : 3,795.12 = 990 : x
  2. Step 2: Convert to fraction form
    2,530.08/3,795.12 = 990/x
  3. Step 3: Cross multiply
    2,530.08x = 3,795.12 × 990
  4. Step 4: Simplify right side
    2,530.08x = 3,757,168.80
  5. Step 5: Solve for x
    x = 3,757,168.80/2,530.08
  6. Step 6: Final answer
    x = 1,485

Related Problems

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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.