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Finding the Fourth Proportional to 4,981.30, 7,472.49 and 1,862.80

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Solution

The fourth proportional to 4,981.30, 7,472.49 and 1,862.80 is: 2,794.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981.30 : 7,472.49 = 1,862.80 : x
  2. Step 2: Convert to fraction form
    4,981.30/7,472.49 = 1,862.80/x
  3. Step 3: Cross multiply
    4,981.30x = 7,472.49 × 1,862.80
  4. Step 4: Simplify right side
    4,981.30x = 13,919,754.37
  5. Step 5: Solve for x
    x = 13,919,754.37/4,981.30
  6. Step 6: Final answer
    x = 2,794.40

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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.