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Finding the Fourth Proportional to 9,919.95, 14,879.93 and 2,994.45

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Solution

The fourth proportional to 9,919.95, 14,879.93 and 2,994.45 is: 4,491.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.95 : 14,879.93 = 2,994.45 : x
  2. Step 2: Convert to fraction form
    9,919.95/14,879.93 = 2,994.45/x
  3. Step 3: Cross multiply
    9,919.95x = 14,879.93 × 2,994.45
  4. Step 4: Simplify right side
    9,919.95x = 44,557,206.39
  5. Step 5: Solve for x
    x = 44,557,206.39/9,919.95
  6. Step 6: Final answer
    x = 4,491.68

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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.