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Finding the Fourth Proportional to 9,941.99, 14,909.32 and 2,920.20

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Solution

The fourth proportional to 9,941.99, 14,909.32 and 2,920.20 is: 4,379.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,941.99 : 14,909.32 = 2,920.20 : x
  2. Step 2: Convert to fraction form
    9,941.99/14,909.32 = 2,920.20/x
  3. Step 3: Cross multiply
    9,941.99x = 14,909.32 × 2,920.20
  4. Step 4: Simplify right side
    9,941.99x = 43,538,144.00
  5. Step 5: Solve for x
    x = 43,538,144.00/9,941.99
  6. Step 6: Final answer
    x = 4,379.22

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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.