Home / 8,051.42-12,075.74-2,128.36

Finding the Fourth Proportional to 8,051.42, 12,075.74 and 2,128.36

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Solution

The fourth proportional to 8,051.42, 12,075.74 and 2,128.36 is: 3,192.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,051.42 : 12,075.74 = 2,128.36 : x
  2. Step 2: Convert to fraction form
    8,051.42/12,075.74 = 2,128.36/x
  3. Step 3: Cross multiply
    8,051.42x = 12,075.74 × 2,128.36
  4. Step 4: Simplify right side
    8,051.42x = 25,701,521.99
  5. Step 5: Solve for x
    x = 25,701,521.99/8,051.42
  6. Step 6: Final answer
    x = 3,192.17

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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.