Home / 8,075.85-12,112.80-2,153.19

Finding the Fourth Proportional to 8,075.85, 12,112.80 and 2,153.19

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Solution

The fourth proportional to 8,075.85, 12,112.80 and 2,153.19 is: 3,229.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.85 : 12,112.80 = 2,153.19 : x
  2. Step 2: Convert to fraction form
    8,075.85/12,112.80 = 2,153.19/x
  3. Step 3: Cross multiply
    8,075.85x = 12,112.80 × 2,153.19
  4. Step 4: Simplify right side
    8,075.85x = 26,081,159.83
  5. Step 5: Solve for x
    x = 26,081,159.83/8,075.85
  6. Step 6: Final answer
    x = 3,229.53

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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.