Home / 1,215.05-1,822.89-630.23

Finding the Fourth Proportional to 1,215.05, 1,822.89 and 630.23

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Solution

The fourth proportional to 1,215.05, 1,822.89 and 630.23 is: 945.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.05 : 1,822.89 = 630.23 : x
  2. Step 2: Convert to fraction form
    1,215.05/1,822.89 = 630.23/x
  3. Step 3: Cross multiply
    1,215.05x = 1,822.89 × 630.23
  4. Step 4: Simplify right side
    1,215.05x = 1,148,839.96
  5. Step 5: Solve for x
    x = 1,148,839.96/1,215.05
  6. Step 6: Final answer
    x = 945.51

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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.