Home / 5,477.28-8,216.72-2,880.40

Finding the Fourth Proportional to 5,477.28, 8,216.72 and 2,880.40

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Solution

The fourth proportional to 5,477.28, 8,216.72 and 2,880.40 is: 4,321.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,477.28 : 8,216.72 = 2,880.40 : x
  2. Step 2: Convert to fraction form
    5,477.28/8,216.72 = 2,880.40/x
  3. Step 3: Cross multiply
    5,477.28x = 8,216.72 × 2,880.40
  4. Step 4: Simplify right side
    5,477.28x = 23,667,440.29
  5. Step 5: Solve for x
    x = 23,667,440.29/5,477.28
  6. Step 6: Final answer
    x = 4,321.02

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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.