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Finding the Fourth Proportional to 10,615.61, 15,923.65 and 3,860.97

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Solution

The fourth proportional to 10,615.61, 15,923.65 and 3,860.97 is: 5,791.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,615.61 : 15,923.65 = 3,860.97 : x
  2. Step 2: Convert to fraction form
    10,615.61/15,923.65 = 3,860.97/x
  3. Step 3: Cross multiply
    10,615.61x = 15,923.65 × 3,860.97
  4. Step 4: Simplify right side
    10,615.61x = 61,480,762.38
  5. Step 5: Solve for x
    x = 61,480,762.38/10,615.61
  6. Step 6: Final answer
    x = 5,791.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.