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Finding the Fourth Proportional to 9,860.78, 13,608.51 and 5,668.94

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Solution

The fourth proportional to 9,860.78, 13,608.51 and 5,668.94 is: 7,823.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,860.78 : 13,608.51 = 5,668.94 : x
  2. Step 2: Convert to fraction form
    9,860.78/13,608.51 = 5,668.94/x
  3. Step 3: Cross multiply
    9,860.78x = 13,608.51 × 5,668.94
  4. Step 4: Simplify right side
    9,860.78x = 77,145,826.68
  5. Step 5: Solve for x
    x = 77,145,826.68/9,860.78
  6. Step 6: Final answer
    x = 7,823.50

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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.