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Finding the Fourth Proportional to 7,472.44, 10,309.80 and 4,821.40

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Solution

The fourth proportional to 7,472.44, 10,309.80 and 4,821.40 is: 6,652.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,472.44 : 10,309.80 = 4,821.40 : x
  2. Step 2: Convert to fraction form
    7,472.44/10,309.80 = 4,821.40/x
  3. Step 3: Cross multiply
    7,472.44x = 10,309.80 × 4,821.40
  4. Step 4: Simplify right side
    7,472.44x = 49,707,669.72
  5. Step 5: Solve for x
    x = 49,707,669.72/7,472.44
  6. Step 6: Final answer
    x = 6,652.13

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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.