Home / 1,969.40-2,717.74-1,085.16

Finding the Fourth Proportional to 1,969.40, 2,717.74 and 1,085.16

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Solution

The fourth proportional to 1,969.40, 2,717.74 and 1,085.16 is: 1,497.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.40 : 2,717.74 = 1,085.16 : x
  2. Step 2: Convert to fraction form
    1,969.40/2,717.74 = 1,085.16/x
  3. Step 3: Cross multiply
    1,969.40x = 2,717.74 × 1,085.16
  4. Step 4: Simplify right side
    1,969.40x = 2,949,182.74
  5. Step 5: Solve for x
    x = 2,949,182.74/1,969.40
  6. Step 6: Final answer
    x = 1,497.50

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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.