Home / 7,477.30-10,318.67-4,120.12

Finding the Fourth Proportional to 7,477.30, 10,318.67 and 4,120.12

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Solution

The fourth proportional to 7,477.30, 10,318.67 and 4,120.12 is: 5,685.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477.30 : 10,318.67 = 4,120.12 : x
  2. Step 2: Convert to fraction form
    7,477.30/10,318.67 = 4,120.12/x
  3. Step 3: Cross multiply
    7,477.30x = 10,318.67 × 4,120.12
  4. Step 4: Simplify right side
    7,477.30x = 42,514,112.24
  5. Step 5: Solve for x
    x = 42,514,112.24/7,477.30
  6. Step 6: Final answer
    x = 5,685.76

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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.