Home / 1,896.64-2,618.67-1,188.77

Finding the Fourth Proportional to 1,896.64, 2,618.67 and 1,188.77

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Solution

The fourth proportional to 1,896.64, 2,618.67 and 1,188.77 is: 1,641.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,896.64 : 2,618.67 = 1,188.77 : x
  2. Step 2: Convert to fraction form
    1,896.64/2,618.67 = 1,188.77/x
  3. Step 3: Cross multiply
    1,896.64x = 2,618.67 × 1,188.77
  4. Step 4: Simplify right side
    1,896.64x = 3,112,982.06
  5. Step 5: Solve for x
    x = 3,112,982.06/1,896.64
  6. Step 6: Final answer
    x = 1,641.32

Related Problems

Find fourth proportional to 948.32, 1,309.33 and 594.38
Half scale
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Double scale
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Similar ratio
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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.