Home / 7,821.32-10,794.81-4,989.54

Finding the Fourth Proportional to 7,821.32, 10,794.81 and 4,989.54

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Solution

The fourth proportional to 7,821.32, 10,794.81 and 4,989.54 is: 6,886.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.32 : 10,794.81 = 4,989.54 : x
  2. Step 2: Convert to fraction form
    7,821.32/10,794.81 = 4,989.54/x
  3. Step 3: Cross multiply
    7,821.32x = 10,794.81 × 4,989.54
  4. Step 4: Simplify right side
    7,821.32x = 53,861,136.29
  5. Step 5: Solve for x
    x = 53,861,136.29/7,821.32
  6. Step 6: Final answer
    x = 6,886.46

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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.