Home / 7,979.18-11,957.82-4,075.40

Finding the Fourth Proportional to 7,979.18, 11,957.82 and 4,075.40

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Solution

The fourth proportional to 7,979.18, 11,957.82 and 4,075.40 is: 6,107.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.18 : 11,957.82 = 4,075.40 : x
  2. Step 2: Convert to fraction form
    7,979.18/11,957.82 = 4,075.40/x
  3. Step 3: Cross multiply
    7,979.18x = 11,957.82 × 4,075.40
  4. Step 4: Simplify right side
    7,979.18x = 48,732,899.63
  5. Step 5: Solve for x
    x = 48,732,899.63/7,979.18
  6. Step 6: Final answer
    x = 6,107.51

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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.