Home / 5,618.09-8,428.21-2,155.07

Finding the Fourth Proportional to 5,618.09, 8,428.21 and 2,155.07

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Solution

The fourth proportional to 5,618.09, 8,428.21 and 2,155.07 is: 3,233.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.09 : 8,428.21 = 2,155.07 : x
  2. Step 2: Convert to fraction form
    5,618.09/8,428.21 = 2,155.07/x
  3. Step 3: Cross multiply
    5,618.09x = 8,428.21 × 2,155.07
  4. Step 4: Simplify right side
    5,618.09x = 18,163,340.38
  5. Step 5: Solve for x
    x = 18,163,340.38/5,618.09
  6. Step 6: Final answer
    x = 3,233.01

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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.