Home / 2,084.87-3,126.47-929.81

Finding the Fourth Proportional to 2,084.87, 3,126.47 and 929.81

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Solution

The fourth proportional to 2,084.87, 3,126.47 and 929.81 is: 1,394.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,084.87 : 3,126.47 = 929.81 : x
  2. Step 2: Convert to fraction form
    2,084.87/3,126.47 = 929.81/x
  3. Step 3: Cross multiply
    2,084.87x = 3,126.47 × 929.81
  4. Step 4: Simplify right side
    2,084.87x = 2,907,026.24
  5. Step 5: Solve for x
    x = 2,907,026.24/2,084.87
  6. Step 6: Final answer
    x = 1,394.34

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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.