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Finding the Fourth Proportional to 2,590.05, 3,885.08 and 741.28

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Solution

The fourth proportional to 2,590.05, 3,885.08 and 741.28 is: 1,111.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,590.05 : 3,885.08 = 741.28 : x
  2. Step 2: Convert to fraction form
    2,590.05/3,885.08 = 741.28/x
  3. Step 3: Cross multiply
    2,590.05x = 3,885.08 × 741.28
  4. Step 4: Simplify right side
    2,590.05x = 2,879,932.10
  5. Step 5: Solve for x
    x = 2,879,932.10/2,590.05
  6. Step 6: Final answer
    x = 1,111.92

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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.