Home / 1,966.46-2,949.69-579.80

Finding the Fourth Proportional to 1,966.46, 2,949.69 and 579.80

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Solution

The fourth proportional to 1,966.46, 2,949.69 and 579.80 is: 869.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.46 : 2,949.69 = 579.80 : x
  2. Step 2: Convert to fraction form
    1,966.46/2,949.69 = 579.80/x
  3. Step 3: Cross multiply
    1,966.46x = 2,949.69 × 579.80
  4. Step 4: Simplify right side
    1,966.46x = 1,710,212.61
  5. Step 5: Solve for x
    x = 1,710,212.61/1,966.46
  6. Step 6: Final answer
    x = 869.69

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1.5x scale

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.