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Finding the Fourth Proportional to 4,838.40, 7,243.20 and 2,894.40

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Solution

The fourth proportional to 4,838.40, 7,243.20 and 2,894.40 is: 4,332.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,838.40 : 7,243.20 = 2,894.40 : x
  2. Step 2: Convert to fraction form
    4,838.40/7,243.20 = 2,894.40/x
  3. Step 3: Cross multiply
    4,838.40x = 7,243.20 × 2,894.40
  4. Step 4: Simplify right side
    4,838.40x = 20,964,718.08
  5. Step 5: Solve for x
    x = 20,964,718.08/4,838.40
  6. Step 6: Final answer
    x = 4,332.99

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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.