Home / 7,620.86-10,516.47-4,171.42

Finding the Fourth Proportional to 7,620.86, 10,516.47 and 4,171.42

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Solution

The fourth proportional to 7,620.86, 10,516.47 and 4,171.42 is: 5,756.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.86 : 10,516.47 = 4,171.42 : x
  2. Step 2: Convert to fraction form
    7,620.86/10,516.47 = 4,171.42/x
  3. Step 3: Cross multiply
    7,620.86x = 10,516.47 × 4,171.42
  4. Step 4: Simplify right side
    7,620.86x = 43,868,591.42
  5. Step 5: Solve for x
    x = 43,868,591.42/7,620.86
  6. Step 6: Final answer
    x = 5,756.38

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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.