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Finding the Fourth Proportional to 2,590.63, 3,885.04 and 835.21

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Solution

The fourth proportional to 2,590.63, 3,885.04 and 835.21 is: 1,252.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,590.63 : 3,885.04 = 835.21 : x
  2. Step 2: Convert to fraction form
    2,590.63/3,885.04 = 835.21/x
  3. Step 3: Cross multiply
    2,590.63x = 3,885.04 × 835.21
  4. Step 4: Simplify right side
    2,590.63x = 3,244,824.26
  5. Step 5: Solve for x
    x = 3,244,824.26/2,590.63
  6. Step 6: Final answer
    x = 1,252.52

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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.