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Finding the Fourth Proportional to 9,992.40, 14,988.72 and 2,972.25

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Solution

The fourth proportional to 9,992.40, 14,988.72 and 2,972.25 is: 4,458.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992.40 : 14,988.72 = 2,972.25 : x
  2. Step 2: Convert to fraction form
    9,992.40/14,988.72 = 2,972.25/x
  3. Step 3: Cross multiply
    9,992.40x = 14,988.72 × 2,972.25
  4. Step 4: Simplify right side
    9,992.40x = 44,550,223.02
  5. Step 5: Solve for x
    x = 44,550,223.02/9,992.40
  6. Step 6: Final answer
    x = 4,458.41

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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.