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Finding the Fourth Proportional to 8,075.44, 12,127.07 and 4,809.07

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Solution

The fourth proportional to 8,075.44, 12,127.07 and 4,809.07 is: 7,221.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.44 : 12,127.07 = 4,809.07 : x
  2. Step 2: Convert to fraction form
    8,075.44/12,127.07 = 4,809.07/x
  3. Step 3: Cross multiply
    8,075.44x = 12,127.07 × 4,809.07
  4. Step 4: Simplify right side
    8,075.44x = 58,319,928.52
  5. Step 5: Solve for x
    x = 58,319,928.52/8,075.44
  6. Step 6: Final answer
    x = 7,221.89

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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.