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Finding the Fourth Proportional to 8,783.91, 12,118.40 and 5,596.64

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Solution

The fourth proportional to 8,783.91, 12,118.40 and 5,596.64 is: 7,721.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.91 : 12,118.40 = 5,596.64 : x
  2. Step 2: Convert to fraction form
    8,783.91/12,118.40 = 5,596.64/x
  3. Step 3: Cross multiply
    8,783.91x = 12,118.40 × 5,596.64
  4. Step 4: Simplify right side
    8,783.91x = 67,822,294.19
  5. Step 5: Solve for x
    x = 67,822,294.19/8,783.91
  6. Step 6: Final answer
    x = 7,721.20

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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.