Home / 1,955.32-2,698.36-1,071.21

Finding the Fourth Proportional to 1,955.32, 2,698.36 and 1,071.21

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Solution

The fourth proportional to 1,955.32, 2,698.36 and 1,071.21 is: 1,478.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.32 : 2,698.36 = 1,071.21 : x
  2. Step 2: Convert to fraction form
    1,955.32/2,698.36 = 1,071.21/x
  3. Step 3: Cross multiply
    1,955.32x = 2,698.36 × 1,071.21
  4. Step 4: Simplify right side
    1,955.32x = 2,890,510.22
  5. Step 5: Solve for x
    x = 2,890,510.22/1,955.32
  6. Step 6: Final answer
    x = 1,478.28

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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.