Home / 1,868.60-2,577.36-1,205.18

Finding the Fourth Proportional to 1,868.60, 2,577.36 and 1,205.18

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Solution

The fourth proportional to 1,868.60, 2,577.36 and 1,205.18 is: 1,662.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.60 : 2,577.36 = 1,205.18 : x
  2. Step 2: Convert to fraction form
    1,868.60/2,577.36 = 1,205.18/x
  3. Step 3: Cross multiply
    1,868.60x = 2,577.36 × 1,205.18
  4. Step 4: Simplify right side
    1,868.60x = 3,106,182.72
  5. Step 5: Solve for x
    x = 3,106,182.72/1,868.60
  6. Step 6: Final answer
    x = 1,662.30

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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.