Home / 5,428.27-7,491.18-3,813.40

Finding the Fourth Proportional to 5,428.27, 7,491.18 and 3,813.40

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Solution

The fourth proportional to 5,428.27, 7,491.18 and 3,813.40 is: 5,262.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.27 : 7,491.18 = 3,813.40 : x
  2. Step 2: Convert to fraction form
    5,428.27/7,491.18 = 3,813.40/x
  3. Step 3: Cross multiply
    5,428.27x = 7,491.18 × 3,813.40
  4. Step 4: Simplify right side
    5,428.27x = 28,566,865.81
  5. Step 5: Solve for x
    x = 28,566,865.81/5,428.27
  6. Step 6: Final answer
    x = 5,262.61

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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.