Home / 3,420.07-4,719.48-1,927.79

Finding the Fourth Proportional to 3,420.07, 4,719.48 and 1,927.79

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Solution

The fourth proportional to 3,420.07, 4,719.48 and 1,927.79 is: 2,660.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.07 : 4,719.48 = 1,927.79 : x
  2. Step 2: Convert to fraction form
    3,420.07/4,719.48 = 1,927.79/x
  3. Step 3: Cross multiply
    3,420.07x = 4,719.48 × 1,927.79
  4. Step 4: Simplify right side
    3,420.07x = 9,098,149.29
  5. Step 5: Solve for x
    x = 9,098,149.29/3,420.07
  6. Step 6: Final answer
    x = 2,660.22

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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.