Home / 3,807.35-5,253.58-2,128.51

Finding the Fourth Proportional to 3,807.35, 5,253.58 and 2,128.51

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Solution

The fourth proportional to 3,807.35, 5,253.58 and 2,128.51 is: 2,937.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,807.35 : 5,253.58 = 2,128.51 : x
  2. Step 2: Convert to fraction form
    3,807.35/5,253.58 = 2,128.51/x
  3. Step 3: Cross multiply
    3,807.35x = 5,253.58 × 2,128.51
  4. Step 4: Simplify right side
    3,807.35x = 11,182,297.57
  5. Step 5: Solve for x
    x = 11,182,297.57/3,807.35
  6. Step 6: Final answer
    x = 2,937.03

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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.