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Finding the Fourth Proportional to 8,513.92, 12,782.83 and 4,356.91

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Solution

The fourth proportional to 8,513.92, 12,782.83 and 4,356.91 is: 6,541.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,513.92 : 12,782.83 = 4,356.91 : x
  2. Step 2: Convert to fraction form
    8,513.92/12,782.83 = 4,356.91/x
  3. Step 3: Cross multiply
    8,513.92x = 12,782.83 × 4,356.91
  4. Step 4: Simplify right side
    8,513.92x = 55,693,639.86
  5. Step 5: Solve for x
    x = 55,693,639.86/8,513.92
  6. Step 6: Final answer
    x = 6,541.48

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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.