Home / 1,717.44-2,369.16-1,220.28

Finding the Fourth Proportional to 1,717.44, 2,369.16 and 1,220.28

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Solution

The fourth proportional to 1,717.44, 2,369.16 and 1,220.28 is: 1,683.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.44 : 2,369.16 = 1,220.28 : x
  2. Step 2: Convert to fraction form
    1,717.44/2,369.16 = 1,220.28/x
  3. Step 3: Cross multiply
    1,717.44x = 2,369.16 × 1,220.28
  4. Step 4: Simplify right side
    1,717.44x = 2,891,038.56
  5. Step 5: Solve for x
    x = 2,891,038.56/1,717.44
  6. Step 6: Final answer
    x = 1,683.34

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Double scale
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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.