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Finding the Fourth Proportional to 1,608.75, 2,220.08 and 910.13

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Solution

The fourth proportional to 1,608.75, 2,220.08 and 910.13 is: 1,255.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,608.75 : 2,220.08 = 910.13 : x
  2. Step 2: Convert to fraction form
    1,608.75/2,220.08 = 910.13/x
  3. Step 3: Cross multiply
    1,608.75x = 2,220.08 × 910.13
  4. Step 4: Simplify right side
    1,608.75x = 2,020,545.76
  5. Step 5: Solve for x
    x = 2,020,545.76/1,608.75
  6. Step 6: Final answer
    x = 1,255.97

Related Problems

Find fourth proportional to 804.38, 1,110.04 and 455.06
Half scale
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Double scale
Find fourth proportional to 1,609.75, 2,221.46 and 911.13
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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.