Home / 1,613.89-2,227.26-1,220.23

Finding the Fourth Proportional to 1,613.89, 2,227.26 and 1,220.23

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Solution

The fourth proportional to 1,613.89, 2,227.26 and 1,220.23 is: 1,683.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,613.89 : 2,227.26 = 1,220.23 : x
  2. Step 2: Convert to fraction form
    1,613.89/2,227.26 = 1,220.23/x
  3. Step 3: Cross multiply
    1,613.89x = 2,227.26 × 1,220.23
  4. Step 4: Simplify right side
    1,613.89x = 2,717,769.47
  5. Step 5: Solve for x
    x = 2,717,769.47/1,613.89
  6. Step 6: Final answer
    x = 1,683.99

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Half scale
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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.