Home / 1,639.15-2,262.32-966.91

Finding the Fourth Proportional to 1,639.15, 2,262.32 and 966.91

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Solution

The fourth proportional to 1,639.15, 2,262.32 and 966.91 is: 1,334.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.15 : 2,262.32 = 966.91 : x
  2. Step 2: Convert to fraction form
    1,639.15/2,262.32 = 966.91/x
  3. Step 3: Cross multiply
    1,639.15x = 2,262.32 × 966.91
  4. Step 4: Simplify right side
    1,639.15x = 2,187,455.00
  5. Step 5: Solve for x
    x = 2,187,455.00/1,639.15
  6. Step 6: Final answer
    x = 1,334.51

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1.5x scale

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.