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Finding the Fourth Proportional to 1,712.30, 2,566.32 and 890.09

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Solution

The fourth proportional to 1,712.30, 2,566.32 and 890.09 is: 1,334.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.30 : 2,566.32 = 890.09 : x
  2. Step 2: Convert to fraction form
    1,712.30/2,566.32 = 890.09/x
  3. Step 3: Cross multiply
    1,712.30x = 2,566.32 × 890.09
  4. Step 4: Simplify right side
    1,712.30x = 2,284,255.77
  5. Step 5: Solve for x
    x = 2,284,255.77/1,712.30
  6. Step 6: Final answer
    x = 1,334.03

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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.