Home / 7,477.06-10,318.30-4,119.78

Finding the Fourth Proportional to 7,477.06, 10,318.30 and 4,119.78

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Solution

The fourth proportional to 7,477.06, 10,318.30 and 4,119.78 is: 5,685.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477.06 : 10,318.30 = 4,119.78 : x
  2. Step 2: Convert to fraction form
    7,477.06/10,318.30 = 4,119.78/x
  3. Step 3: Cross multiply
    7,477.06x = 10,318.30 × 4,119.78
  4. Step 4: Simplify right side
    7,477.06x = 42,509,105.38
  5. Step 5: Solve for x
    x = 42,509,105.38/7,477.06
  6. Step 6: Final answer
    x = 5,685.27

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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.