Home / 3,968.78-5,476.02-2,290.07

Finding the Fourth Proportional to 3,968.78, 5,476.02 and 2,290.07

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Solution

The fourth proportional to 3,968.78, 5,476.02 and 2,290.07 is: 3,159.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.78 : 5,476.02 = 2,290.07 : x
  2. Step 2: Convert to fraction form
    3,968.78/5,476.02 = 2,290.07/x
  3. Step 3: Cross multiply
    3,968.78x = 5,476.02 × 2,290.07
  4. Step 4: Simplify right side
    3,968.78x = 12,540,482.81
  5. Step 5: Solve for x
    x = 12,540,482.81/3,968.78
  6. Step 6: Final answer
    x = 3,159.79

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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.