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Finding the Fourth Proportional to 5,184, 7,147.28 and 4,238.72

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Solution

The fourth proportional to 5,184, 7,147.28 and 4,238.72 is: 5,844.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,184 : 7,147.28 = 4,238.72 : x
  2. Step 2: Convert to fraction form
    5,184/7,147.28 = 4,238.72/x
  3. Step 3: Cross multiply
    5,184x = 7,147.28 × 4,238.72
  4. Step 4: Simplify right side
    5,184x = 30,295,318.68
  5. Step 5: Solve for x
    x = 30,295,318.68/5,184
  6. Step 6: Final answer
    x = 5,844.00

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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.