Home / 1,435.38-1,986.24-1,225.23

Finding the Fourth Proportional to 1,435.38, 1,986.24 and 1,225.23

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Solution

The fourth proportional to 1,435.38, 1,986.24 and 1,225.23 is: 1,695.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.38 : 1,986.24 = 1,225.23 : x
  2. Step 2: Convert to fraction form
    1,435.38/1,986.24 = 1,225.23/x
  3. Step 3: Cross multiply
    1,435.38x = 1,986.24 × 1,225.23
  4. Step 4: Simplify right side
    1,435.38x = 2,433,600.84
  5. Step 5: Solve for x
    x = 2,433,600.84/1,435.38
  6. Step 6: Final answer
    x = 1,695.44

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Double scale
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1.5x scale

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.