Home / 1,340.16-2,010.52-415.68

Finding the Fourth Proportional to 1,340.16, 2,010.52 and 415.68

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Solution

The fourth proportional to 1,340.16, 2,010.52 and 415.68 is: 623.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.16 : 2,010.52 = 415.68 : x
  2. Step 2: Convert to fraction form
    1,340.16/2,010.52 = 415.68/x
  3. Step 3: Cross multiply
    1,340.16x = 2,010.52 × 415.68
  4. Step 4: Simplify right side
    1,340.16x = 835,732.95
  5. Step 5: Solve for x
    x = 835,732.95/1,340.16
  6. Step 6: Final answer
    x = 623.61

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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.