Home / 5,618.81-8,429.05-1,818.18

Finding the Fourth Proportional to 5,618.81, 8,429.05 and 1,818.18

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Solution

The fourth proportional to 5,618.81, 8,429.05 and 1,818.18 is: 2,727.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.81 : 8,429.05 = 1,818.18 : x
  2. Step 2: Convert to fraction form
    5,618.81/8,429.05 = 1,818.18/x
  3. Step 3: Cross multiply
    5,618.81x = 8,429.05 × 1,818.18
  4. Step 4: Simplify right side
    5,618.81x = 15,325,530.13
  5. Step 5: Solve for x
    x = 15,325,530.13/5,618.81
  6. Step 6: Final answer
    x = 2,727.54

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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.