Home / 5,428.13-8,143.00-1,966.19

Finding the Fourth Proportional to 5,428.13, 8,143.00 and 1,966.19

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Solution

The fourth proportional to 5,428.13, 8,143.00 and 1,966.19 is: 2,949.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.13 : 8,143.00 = 1,966.19 : x
  2. Step 2: Convert to fraction form
    5,428.13/8,143.00 = 1,966.19/x
  3. Step 3: Cross multiply
    5,428.13x = 8,143.00 × 1,966.19
  4. Step 4: Simplify right side
    5,428.13x = 16,010,639.54
  5. Step 5: Solve for x
    x = 16,010,639.54/5,428.13
  6. Step 6: Final answer
    x = 2,949.57

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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.