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Finding the Fourth Proportional to 8,539.32, 11,784.09 and 4,813.32

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Solution

The fourth proportional to 8,539.32, 11,784.09 and 4,813.32 is: 6,642.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,539.32 : 11,784.09 = 4,813.32 : x
  2. Step 2: Convert to fraction form
    8,539.32/11,784.09 = 4,813.32/x
  3. Step 3: Cross multiply
    8,539.32x = 11,784.09 × 4,813.32
  4. Step 4: Simplify right side
    8,539.32x = 56,720,596.08
  5. Step 5: Solve for x
    x = 56,720,596.08/8,539.32
  6. Step 6: Final answer
    x = 6,642.28

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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.