Home / 1,651.23-2,278.76-905.19

Finding the Fourth Proportional to 1,651.23, 2,278.76 and 905.19

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Solution

The fourth proportional to 1,651.23, 2,278.76 and 905.19 is: 1,249.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.23 : 2,278.76 = 905.19 : x
  2. Step 2: Convert to fraction form
    1,651.23/2,278.76 = 905.19/x
  3. Step 3: Cross multiply
    1,651.23x = 2,278.76 × 905.19
  4. Step 4: Simplify right side
    1,651.23x = 2,062,706.24
  5. Step 5: Solve for x
    x = 2,062,706.24/1,651.23
  6. Step 6: Final answer
    x = 1,249.19

Related Problems

Find fourth proportional to 825.62, 1,139.38 and 452.60
Half scale
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Double scale
Find fourth proportional to 1,652.23, 2,280.14 and 906.19
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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.