Home / 9,628.57-13,285.78-5,379.45

Finding the Fourth Proportional to 9,628.57, 13,285.78 and 5,379.45

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Solution

The fourth proportional to 9,628.57, 13,285.78 and 5,379.45 is: 7,422.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,628.57 : 13,285.78 = 5,379.45 : x
  2. Step 2: Convert to fraction form
    9,628.57/13,285.78 = 5,379.45/x
  3. Step 3: Cross multiply
    9,628.57x = 13,285.78 × 5,379.45
  4. Step 4: Simplify right side
    9,628.57x = 71,470,189.22
  5. Step 5: Solve for x
    x = 71,470,189.22/9,628.57
  6. Step 6: Final answer
    x = 7,422.72

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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.