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Finding the Fourth Proportional to 2,590.49, 3,885.87 and 741.88

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Solution

The fourth proportional to 2,590.49, 3,885.87 and 741.88 is: 1,112.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,590.49 : 3,885.87 = 741.88 : x
  2. Step 2: Convert to fraction form
    2,590.49/3,885.87 = 741.88/x
  3. Step 3: Cross multiply
    2,590.49x = 3,885.87 × 741.88
  4. Step 4: Simplify right side
    2,590.49x = 2,882,855.51
  5. Step 5: Solve for x
    x = 2,882,855.51/2,590.49
  6. Step 6: Final answer
    x = 1,112.86

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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.