Home / 2,470.85-3,411-1,422.71

Finding the Fourth Proportional to 2,470.85, 3,411 and 1,422.71

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Solution

The fourth proportional to 2,470.85, 3,411 and 1,422.71 is: 1,964.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,470.85 : 3,411 = 1,422.71 : x
  2. Step 2: Convert to fraction form
    2,470.85/3,411 = 1,422.71/x
  3. Step 3: Cross multiply
    2,470.85x = 3,411 × 1,422.71
  4. Step 4: Simplify right side
    2,470.85x = 4,852,846.76
  5. Step 5: Solve for x
    x = 4,852,846.76/2,470.85
  6. Step 6: Final answer
    x = 1,964.04

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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.