Home / 3,678.79-5,076.52-2,106.99

Finding the Fourth Proportional to 3,678.79, 5,076.52 and 2,106.99

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Solution

The fourth proportional to 3,678.79, 5,076.52 and 2,106.99 is: 2,907.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.79 : 5,076.52 = 2,106.99 : x
  2. Step 2: Convert to fraction form
    3,678.79/5,076.52 = 2,106.99/x
  3. Step 3: Cross multiply
    3,678.79x = 5,076.52 × 2,106.99
  4. Step 4: Simplify right side
    3,678.79x = 10,696,176.87
  5. Step 5: Solve for x
    x = 10,696,176.87/3,678.79
  6. Step 6: Final answer
    x = 2,907.53

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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.