Home / 9,728.28-13,424.85-5,479.34

Finding the Fourth Proportional to 9,728.28, 13,424.85 and 5,479.34

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Solution

The fourth proportional to 9,728.28, 13,424.85 and 5,479.34 is: 7,561.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,728.28 : 13,424.85 = 5,479.34 : x
  2. Step 2: Convert to fraction form
    9,728.28/13,424.85 = 5,479.34/x
  3. Step 3: Cross multiply
    9,728.28x = 13,424.85 × 5,479.34
  4. Step 4: Simplify right side
    9,728.28x = 73,559,250.47
  5. Step 5: Solve for x
    x = 73,559,250.47/9,728.28
  6. Step 6: Final answer
    x = 7,561.38

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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.