Home / 3,678.09-5,075.64-2,105.88

Finding the Fourth Proportional to 3,678.09, 5,075.64 and 2,105.88

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Solution

The fourth proportional to 3,678.09, 5,075.64 and 2,105.88 is: 2,906.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.09 : 5,075.64 = 2,105.88 : x
  2. Step 2: Convert to fraction form
    3,678.09/5,075.64 = 2,105.88/x
  3. Step 3: Cross multiply
    3,678.09x = 5,075.64 × 2,105.88
  4. Step 4: Simplify right side
    3,678.09x = 10,688,688.76
  5. Step 5: Solve for x
    x = 10,688,688.76/3,678.09
  6. Step 6: Final answer
    x = 2,906.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.