Home / 3,719.84-5,128.48-2,670.08

Finding the Fourth Proportional to 3,719.84, 5,128.48 and 2,670.08

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Solution

The fourth proportional to 3,719.84, 5,128.48 and 2,670.08 is: 3,681.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.84 : 5,128.48 = 2,670.08 : x
  2. Step 2: Convert to fraction form
    3,719.84/5,128.48 = 2,670.08/x
  3. Step 3: Cross multiply
    3,719.84x = 5,128.48 × 2,670.08
  4. Step 4: Simplify right side
    3,719.84x = 13,693,451.88
  5. Step 5: Solve for x
    x = 13,693,451.88/3,719.84
  6. Step 6: Final answer
    x = 3,681.19

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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.