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Finding the Fourth Proportional to 9,818.64, 14,727.93 and 3,979.32

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Solution

The fourth proportional to 9,818.64, 14,727.93 and 3,979.32 is: 5,968.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,818.64 : 14,727.93 = 3,979.32 : x
  2. Step 2: Convert to fraction form
    9,818.64/14,727.93 = 3,979.32/x
  3. Step 3: Cross multiply
    9,818.64x = 14,727.93 × 3,979.32
  4. Step 4: Simplify right side
    9,818.64x = 58,607,146.41
  5. Step 5: Solve for x
    x = 58,607,146.41/9,818.64
  6. Step 6: Final answer
    x = 5,968.97

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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.