Home / 8,707.30-12,011.83-5,168

Finding the Fourth Proportional to 8,707.30, 12,011.83 and 5,168

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Solution

The fourth proportional to 8,707.30, 12,011.83 and 5,168 is: 7,129.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.30 : 12,011.83 = 5,168 : x
  2. Step 2: Convert to fraction form
    8,707.30/12,011.83 = 5,168/x
  3. Step 3: Cross multiply
    8,707.30x = 12,011.83 × 5,168
  4. Step 4: Simplify right side
    8,707.30x = 62,077,137.44
  5. Step 5: Solve for x
    x = 62,077,137.44/8,707.30
  6. Step 6: Final answer
    x = 7,129.32

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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.