Home / 1,639.54-2,262.67-931.37

Finding the Fourth Proportional to 1,639.54, 2,262.67 and 931.37

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Solution

The fourth proportional to 1,639.54, 2,262.67 and 931.37 is: 1,285.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.54 : 2,262.67 = 931.37 : x
  2. Step 2: Convert to fraction form
    1,639.54/2,262.67 = 931.37/x
  3. Step 3: Cross multiply
    1,639.54x = 2,262.67 × 931.37
  4. Step 4: Simplify right side
    1,639.54x = 2,107,386.29
  5. Step 5: Solve for x
    x = 2,107,386.29/1,639.54
  6. Step 6: Final answer
    x = 1,285.35

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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.