Home / 7,477.11-10,318.79-4,120.07

Finding the Fourth Proportional to 7,477.11, 10,318.79 and 4,120.07

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Solution

The fourth proportional to 7,477.11, 10,318.79 and 4,120.07 is: 5,685.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477.11 : 10,318.79 = 4,120.07 : x
  2. Step 2: Convert to fraction form
    7,477.11/10,318.79 = 4,120.07/x
  3. Step 3: Cross multiply
    7,477.11x = 10,318.79 × 4,120.07
  4. Step 4: Simplify right side
    7,477.11x = 42,514,095.82
  5. Step 5: Solve for x
    x = 42,514,095.82/7,477.11
  6. Step 6: Final answer
    x = 5,685.90

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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.