Home / 9,868.78-13,618.93-5,619.65

Finding the Fourth Proportional to 9,868.78, 13,618.93 and 5,619.65

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Solution

The fourth proportional to 9,868.78, 13,618.93 and 5,619.65 is: 7,755.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,868.78 : 13,618.93 = 5,619.65 : x
  2. Step 2: Convert to fraction form
    9,868.78/13,618.93 = 5,619.65/x
  3. Step 3: Cross multiply
    9,868.78x = 13,618.93 × 5,619.65
  4. Step 4: Simplify right side
    9,868.78x = 76,533,619.97
  5. Step 5: Solve for x
    x = 76,533,619.97/9,868.78
  6. Step 6: Final answer
    x = 7,755.12

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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.