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Finding the Fourth Proportional to 9,855.68, 14,784.32 and 4,920.32

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Solution

The fourth proportional to 9,855.68, 14,784.32 and 4,920.32 is: 7,380.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,855.68 : 14,784.32 = 4,920.32 : x
  2. Step 2: Convert to fraction form
    9,855.68/14,784.32 = 4,920.32/x
  3. Step 3: Cross multiply
    9,855.68x = 14,784.32 × 4,920.32
  4. Step 4: Simplify right side
    9,855.68x = 72,743,585.38
  5. Step 5: Solve for x
    x = 72,743,585.38/9,855.68
  6. Step 6: Final answer
    x = 7,380.88

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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.