Home / 9,403.60-12,972.38-7,910.98

Finding the Fourth Proportional to 9,403.60, 12,972.38 and 7,910.98

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Solution

The fourth proportional to 9,403.60, 12,972.38 and 7,910.98 is: 10,913.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,403.60 : 12,972.38 = 7,910.98 : x
  2. Step 2: Convert to fraction form
    9,403.60/12,972.38 = 7,910.98/x
  3. Step 3: Cross multiply
    9,403.60x = 12,972.38 × 7,910.98
  4. Step 4: Simplify right side
    9,403.60x = 102,624,238.73
  5. Step 5: Solve for x
    x = 102,624,238.73/9,403.60
  6. Step 6: Final answer
    x = 10,913.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.