Home / 1,955.66-2,698.80-1,071.45

Finding the Fourth Proportional to 1,955.66, 2,698.80 and 1,071.45

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Solution

The fourth proportional to 1,955.66, 2,698.80 and 1,071.45 is: 1,478.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.66 : 2,698.80 = 1,071.45 : x
  2. Step 2: Convert to fraction form
    1,955.66/2,698.80 = 1,071.45/x
  3. Step 3: Cross multiply
    1,955.66x = 2,698.80 × 1,071.45
  4. Step 4: Simplify right side
    1,955.66x = 2,891,623.68
  5. Step 5: Solve for x
    x = 2,891,623.68/1,955.66
  6. Step 6: Final answer
    x = 1,478.59

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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.