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Finding the Fourth Proportional to 8,615.57, 11,889.08 and 5,030.71

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Solution

The fourth proportional to 8,615.57, 11,889.08 and 5,030.71 is: 6,942.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.57 : 11,889.08 = 5,030.71 : x
  2. Step 2: Convert to fraction form
    8,615.57/11,889.08 = 5,030.71/x
  3. Step 3: Cross multiply
    8,615.57x = 11,889.08 × 5,030.71
  4. Step 4: Simplify right side
    8,615.57x = 59,810,477.64
  5. Step 5: Solve for x
    x = 59,810,477.64/8,615.57
  6. Step 6: Final answer
    x = 6,942.14

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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.