Home / 5,280.34-7,286.38-3,155.45

Finding the Fourth Proportional to 5,280.34, 7,286.38 and 3,155.45

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Solution

The fourth proportional to 5,280.34, 7,286.38 and 3,155.45 is: 4,354.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.34 : 7,286.38 = 3,155.45 : x
  2. Step 2: Convert to fraction form
    5,280.34/7,286.38 = 3,155.45/x
  3. Step 3: Cross multiply
    5,280.34x = 7,286.38 × 3,155.45
  4. Step 4: Simplify right side
    5,280.34x = 22,991,806.41
  5. Step 5: Solve for x
    x = 22,991,806.41/5,280.34
  6. Step 6: Final answer
    x = 4,354.23

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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.