Home / 7,738.28-10,668.24-5,315.57

Finding the Fourth Proportional to 7,738.28, 10,668.24 and 5,315.57

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Solution

The fourth proportional to 7,738.28, 10,668.24 and 5,315.57 is: 7,328.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,738.28 : 10,668.24 = 5,315.57 : x
  2. Step 2: Convert to fraction form
    7,738.28/10,668.24 = 5,315.57/x
  3. Step 3: Cross multiply
    7,738.28x = 10,668.24 × 5,315.57
  4. Step 4: Simplify right side
    7,738.28x = 56,707,723.16
  5. Step 5: Solve for x
    x = 56,707,723.16/7,738.28
  6. Step 6: Final answer
    x = 7,328.21

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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.