Home / 8,688.30-11,983.32-6,135

Finding the Fourth Proportional to 8,688.30, 11,983.32 and 6,135

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Solution

The fourth proportional to 8,688.30, 11,983.32 and 6,135 is: 8,461.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.30 : 11,983.32 = 6,135 : x
  2. Step 2: Convert to fraction form
    8,688.30/11,983.32 = 6,135/x
  3. Step 3: Cross multiply
    8,688.30x = 11,983.32 × 6,135
  4. Step 4: Simplify right side
    8,688.30x = 73,517,668.20
  5. Step 5: Solve for x
    x = 73,517,668.20/8,688.30
  6. Step 6: Final answer
    x = 8,461.69

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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.