Home / 1,969.32-2,717.70-1,085.12

Finding the Fourth Proportional to 1,969.32, 2,717.70 and 1,085.12

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Solution

The fourth proportional to 1,969.32, 2,717.70 and 1,085.12 is: 1,497.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.32 : 2,717.70 = 1,085.12 : x
  2. Step 2: Convert to fraction form
    1,969.32/2,717.70 = 1,085.12/x
  3. Step 3: Cross multiply
    1,969.32x = 2,717.70 × 1,085.12
  4. Step 4: Simplify right side
    1,969.32x = 2,949,030.62
  5. Step 5: Solve for x
    x = 2,949,030.62/1,969.32
  6. Step 6: Final answer
    x = 1,497.49

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1.5x scale

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.