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Finding the Fourth Proportional to 7,980.58, 11,969.95 and 3,050.11

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Solution

The fourth proportional to 7,980.58, 11,969.95 and 3,050.11 is: 4,574.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.58 : 11,969.95 = 3,050.11 : x
  2. Step 2: Convert to fraction form
    7,980.58/11,969.95 = 3,050.11/x
  3. Step 3: Cross multiply
    7,980.58x = 11,969.95 × 3,050.11
  4. Step 4: Simplify right side
    7,980.58x = 36,509,664.19
  5. Step 5: Solve for x
    x = 36,509,664.19/7,980.58
  6. Step 6: Final answer
    x = 4,574.81

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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.