Home / 1,663.48-2,294.78-1,220.44

Finding the Fourth Proportional to 1,663.48, 2,294.78 and 1,220.44

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Solution

The fourth proportional to 1,663.48, 2,294.78 and 1,220.44 is: 1,683.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663.48 : 2,294.78 = 1,220.44 : x
  2. Step 2: Convert to fraction form
    1,663.48/2,294.78 = 1,220.44/x
  3. Step 3: Cross multiply
    1,663.48x = 2,294.78 × 1,220.44
  4. Step 4: Simplify right side
    1,663.48x = 2,800,641.30
  5. Step 5: Solve for x
    x = 2,800,641.30/1,663.48
  6. Step 6: Final answer
    x = 1,683.60

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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.