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Finding the Fourth Proportional to 2,864.85, 4,297.39 and 890.69

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Solution

The fourth proportional to 2,864.85, 4,297.39 and 890.69 is: 1,336.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,864.85 : 4,297.39 = 890.69 : x
  2. Step 2: Convert to fraction form
    2,864.85/4,297.39 = 890.69/x
  3. Step 3: Cross multiply
    2,864.85x = 4,297.39 × 890.69
  4. Step 4: Simplify right side
    2,864.85x = 3,827,642.30
  5. Step 5: Solve for x
    x = 3,827,642.30/2,864.85
  6. Step 6: Final answer
    x = 1,336.07

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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.