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Finding the Fourth Proportional to 4,153.20, 5,715.20 and 4,127.64

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Solution

The fourth proportional to 4,153.20, 5,715.20 and 4,127.64 is: 5,680.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,153.20 : 5,715.20 = 4,127.64 : x
  2. Step 2: Convert to fraction form
    4,153.20/5,715.20 = 4,127.64/x
  3. Step 3: Cross multiply
    4,153.20x = 5,715.20 × 4,127.64
  4. Step 4: Simplify right side
    4,153.20x = 23,590,288.13
  5. Step 5: Solve for x
    x = 23,590,288.13/4,153.20
  6. Step 6: Final answer
    x = 5,680.03

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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.