Home / 1,215.26-1,822.90-349.58

Finding the Fourth Proportional to 1,215.26, 1,822.90 and 349.58

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Solution

The fourth proportional to 1,215.26, 1,822.90 and 349.58 is: 524.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.26 : 1,822.90 = 349.58 : x
  2. Step 2: Convert to fraction form
    1,215.26/1,822.90 = 349.58/x
  3. Step 3: Cross multiply
    1,215.26x = 1,822.90 × 349.58
  4. Step 4: Simplify right side
    1,215.26x = 637,238.52
  5. Step 5: Solve for x
    x = 637,238.52/1,215.26
  6. Step 6: Final answer
    x = 524.36

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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.