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Finding the Fourth Proportional to 9,979.59, 14,946.73 and 7,740.45

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Solution

The fourth proportional to 9,979.59, 14,946.73 and 7,740.45 is: 11,593.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.59 : 14,946.73 = 7,740.45 : x
  2. Step 2: Convert to fraction form
    9,979.59/14,946.73 = 7,740.45/x
  3. Step 3: Cross multiply
    9,979.59x = 14,946.73 × 7,740.45
  4. Step 4: Simplify right side
    9,979.59x = 115,694,416.23
  5. Step 5: Solve for x
    x = 115,694,416.23/9,979.59
  6. Step 6: Final answer
    x = 11,593.10

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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.