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Finding the Fourth Proportional to 1,818.26, 2,723.10 and 890.90

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Solution

The fourth proportional to 1,818.26, 2,723.10 and 890.90 is: 1,334.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.26 : 2,723.10 = 890.90 : x
  2. Step 2: Convert to fraction form
    1,818.26/2,723.10 = 890.90/x
  3. Step 3: Cross multiply
    1,818.26x = 2,723.10 × 890.90
  4. Step 4: Simplify right side
    1,818.26x = 2,426,009.79
  5. Step 5: Solve for x
    x = 2,426,009.79/1,818.26
  6. Step 6: Final answer
    x = 1,334.25

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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.