Home / 3,780.02-5,216.32-2,164.88

Finding the Fourth Proportional to 3,780.02, 5,216.32 and 2,164.88

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Solution

The fourth proportional to 3,780.02, 5,216.32 and 2,164.88 is: 2,987.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.02 : 5,216.32 = 2,164.88 : x
  2. Step 2: Convert to fraction form
    3,780.02/5,216.32 = 2,164.88/x
  3. Step 3: Cross multiply
    3,780.02x = 5,216.32 × 2,164.88
  4. Step 4: Simplify right side
    3,780.02x = 11,292,706.84
  5. Step 5: Solve for x
    x = 11,292,706.84/3,780.02
  6. Step 6: Final answer
    x = 2,987.47

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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.