Home / 1,458.42-2,011.68-868.50

Finding the Fourth Proportional to 1,458.42, 2,011.68 and 868.50

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Solution

The fourth proportional to 1,458.42, 2,011.68 and 868.50 is: 1,197.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.42 : 2,011.68 = 868.50 : x
  2. Step 2: Convert to fraction form
    1,458.42/2,011.68 = 868.50/x
  3. Step 3: Cross multiply
    1,458.42x = 2,011.68 × 868.50
  4. Step 4: Simplify right side
    1,458.42x = 1,747,144.08
  5. Step 5: Solve for x
    x = 1,747,144.08/1,458.42
  6. Step 6: Final answer
    x = 1,197.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.