Home / 1,284.09-1,926.56-462.21

Finding the Fourth Proportional to 1,284.09, 1,926.56 and 462.21

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Solution

The fourth proportional to 1,284.09, 1,926.56 and 462.21 is: 693.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.09 : 1,926.56 = 462.21 : x
  2. Step 2: Convert to fraction form
    1,284.09/1,926.56 = 462.21/x
  3. Step 3: Cross multiply
    1,284.09x = 1,926.56 × 462.21
  4. Step 4: Simplify right side
    1,284.09x = 890,472.99
  5. Step 5: Solve for x
    x = 890,472.99/1,284.09
  6. Step 6: Final answer
    x = 693.47

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Double scale
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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.