Home / 7,209.85-10,743.11-6,423.81

Finding the Fourth Proportional to 7,209.85, 10,743.11 and 6,423.81

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Solution

The fourth proportional to 7,209.85, 10,743.11 and 6,423.81 is: 9,571.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209.85 : 10,743.11 = 6,423.81 : x
  2. Step 2: Convert to fraction form
    7,209.85/10,743.11 = 6,423.81/x
  3. Step 3: Cross multiply
    7,209.85x = 10,743.11 × 6,423.81
  4. Step 4: Simplify right side
    7,209.85x = 69,011,697.45
  5. Step 5: Solve for x
    x = 69,011,697.45/7,209.85
  6. Step 6: Final answer
    x = 9,571.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.