Home / 1,376.18-2,064.39-402.38

Finding the Fourth Proportional to 1,376.18, 2,064.39 and 402.38

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Solution

The fourth proportional to 1,376.18, 2,064.39 and 402.38 is: 603.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376.18 : 2,064.39 = 402.38 : x
  2. Step 2: Convert to fraction form
    1,376.18/2,064.39 = 402.38/x
  3. Step 3: Cross multiply
    1,376.18x = 2,064.39 × 402.38
  4. Step 4: Simplify right side
    1,376.18x = 830,669.25
  5. Step 5: Solve for x
    x = 830,669.25/1,376.18
  6. Step 6: Final answer
    x = 603.61

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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.