Home / 1,392.40-2,077.70-1,359.46

Finding the Fourth Proportional to 1,392.40, 2,077.70 and 1,359.46

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Solution

The fourth proportional to 1,392.40, 2,077.70 and 1,359.46 is: 2,028.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.40 : 2,077.70 = 1,359.46 : x
  2. Step 2: Convert to fraction form
    1,392.40/2,077.70 = 1,359.46/x
  3. Step 3: Cross multiply
    1,392.40x = 2,077.70 × 1,359.46
  4. Step 4: Simplify right side
    1,392.40x = 2,824,550.04
  5. Step 5: Solve for x
    x = 2,824,550.04/1,392.40
  6. Step 6: Final answer
    x = 2,028.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.