Home / 9,640.05-13,303.18-5,391.07

Finding the Fourth Proportional to 9,640.05, 13,303.18 and 5,391.07

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Solution

The fourth proportional to 9,640.05, 13,303.18 and 5,391.07 is: 7,439.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,640.05 : 13,303.18 = 5,391.07 : x
  2. Step 2: Convert to fraction form
    9,640.05/13,303.18 = 5,391.07/x
  3. Step 3: Cross multiply
    9,640.05x = 13,303.18 × 5,391.07
  4. Step 4: Simplify right side
    9,640.05x = 71,718,308.09
  5. Step 5: Solve for x
    x = 71,718,308.09/9,640.05
  6. Step 6: Final answer
    x = 7,439.62

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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.