Home / 1,213.73-1,812.36-964.13

Finding the Fourth Proportional to 1,213.73, 1,812.36 and 964.13

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Solution

The fourth proportional to 1,213.73, 1,812.36 and 964.13 is: 1,439.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213.73 : 1,812.36 = 964.13 : x
  2. Step 2: Convert to fraction form
    1,213.73/1,812.36 = 964.13/x
  3. Step 3: Cross multiply
    1,213.73x = 1,812.36 × 964.13
  4. Step 4: Simplify right side
    1,213.73x = 1,747,349.18
  5. Step 5: Solve for x
    x = 1,747,349.18/1,213.73
  6. Step 6: Final answer
    x = 1,439.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.