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Finding the Fourth Proportional to 9,987.86, 14,976.44 and 2,966.88

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Solution

The fourth proportional to 9,987.86, 14,976.44 and 2,966.88 is: 4,448.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.86 : 14,976.44 = 2,966.88 : x
  2. Step 2: Convert to fraction form
    9,987.86/14,976.44 = 2,966.88/x
  3. Step 3: Cross multiply
    9,987.86x = 14,976.44 × 2,966.88
  4. Step 4: Simplify right side
    9,987.86x = 44,433,285.21
  5. Step 5: Solve for x
    x = 44,433,285.21/9,987.86
  6. Step 6: Final answer
    x = 4,448.73

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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.