Home / 9,163.65-12,647.46-5,386.79

Finding the Fourth Proportional to 9,163.65, 12,647.46 and 5,386.79

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Solution

The fourth proportional to 9,163.65, 12,647.46 and 5,386.79 is: 7,434.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,163.65 : 12,647.46 = 5,386.79 : x
  2. Step 2: Convert to fraction form
    9,163.65/12,647.46 = 5,386.79/x
  3. Step 3: Cross multiply
    9,163.65x = 12,647.46 × 5,386.79
  4. Step 4: Simplify right side
    9,163.65x = 68,129,147.82
  5. Step 5: Solve for x
    x = 68,129,147.82/9,163.65
  6. Step 6: Final answer
    x = 7,434.72

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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.