Home / 7,620.79-10,521.21-4,790.56

Finding the Fourth Proportional to 7,620.79, 10,521.21 and 4,790.56

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Solution

The fourth proportional to 7,620.79, 10,521.21 and 4,790.56 is: 6,613.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.79 : 10,521.21 = 4,790.56 : x
  2. Step 2: Convert to fraction form
    7,620.79/10,521.21 = 4,790.56/x
  3. Step 3: Cross multiply
    7,620.79x = 10,521.21 × 4,790.56
  4. Step 4: Simplify right side
    7,620.79x = 50,402,487.78
  5. Step 5: Solve for x
    x = 50,402,487.78/7,620.79
  6. Step 6: Final answer
    x = 6,613.81

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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.