Home / 3,388.79-4,675.78-2,130.10

Finding the Fourth Proportional to 3,388.79, 4,675.78 and 2,130.10

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Solution

The fourth proportional to 3,388.79, 4,675.78 and 2,130.10 is: 2,939.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388.79 : 4,675.78 = 2,130.10 : x
  2. Step 2: Convert to fraction form
    3,388.79/4,675.78 = 2,130.10/x
  3. Step 3: Cross multiply
    3,388.79x = 4,675.78 × 2,130.10
  4. Step 4: Simplify right side
    3,388.79x = 9,959,857.97
  5. Step 5: Solve for x
    x = 9,959,857.97/3,388.79
  6. Step 6: Final answer
    x = 2,939.06

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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.