Home / 1,390.14-2,083.69-568.19

Finding the Fourth Proportional to 1,390.14, 2,083.69 and 568.19

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Solution

The fourth proportional to 1,390.14, 2,083.69 and 568.19 is: 851.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390.14 : 2,083.69 = 568.19 : x
  2. Step 2: Convert to fraction form
    1,390.14/2,083.69 = 568.19/x
  3. Step 3: Cross multiply
    1,390.14x = 2,083.69 × 568.19
  4. Step 4: Simplify right side
    1,390.14x = 1,183,931.82
  5. Step 5: Solve for x
    x = 1,183,931.82/1,390.14
  6. Step 6: Final answer
    x = 851.66

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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.