Home / 1,960.32-2,705.28-1,132.80

Finding the Fourth Proportional to 1,960.32, 2,705.28 and 1,132.80

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Solution

The fourth proportional to 1,960.32, 2,705.28 and 1,132.80 is: 1,563.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,960.32 : 2,705.28 = 1,132.80 : x
  2. Step 2: Convert to fraction form
    1,960.32/2,705.28 = 1,132.80/x
  3. Step 3: Cross multiply
    1,960.32x = 2,705.28 × 1,132.80
  4. Step 4: Simplify right side
    1,960.32x = 3,064,541.18
  5. Step 5: Solve for x
    x = 3,064,541.18/1,960.32
  6. Step 6: Final answer
    x = 1,563.29

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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.