Home / 9,178.28-12,666.34-5,145.29

Finding the Fourth Proportional to 9,178.28, 12,666.34 and 5,145.29

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Solution

The fourth proportional to 9,178.28, 12,666.34 and 5,145.29 is: 7,100.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,178.28 : 12,666.34 = 5,145.29 : x
  2. Step 2: Convert to fraction form
    9,178.28/12,666.34 = 5,145.29/x
  3. Step 3: Cross multiply
    9,178.28x = 12,666.34 × 5,145.29
  4. Step 4: Simplify right side
    9,178.28x = 65,171,992.54
  5. Step 5: Solve for x
    x = 65,171,992.54/9,178.28
  6. Step 6: Final answer
    x = 7,100.68

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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.