Home / 2,640.19-3,643.20-1,461.23

Finding the Fourth Proportional to 2,640.19, 3,643.20 and 1,461.23

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Solution

The fourth proportional to 2,640.19, 3,643.20 and 1,461.23 is: 2,016.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.19 : 3,643.20 = 1,461.23 : x
  2. Step 2: Convert to fraction form
    2,640.19/3,643.20 = 1,461.23/x
  3. Step 3: Cross multiply
    2,640.19x = 3,643.20 × 1,461.23
  4. Step 4: Simplify right side
    2,640.19x = 5,323,553.14
  5. Step 5: Solve for x
    x = 5,323,553.14/2,640.19
  6. Step 6: Final answer
    x = 2,016.35

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Half scale
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Find fourth proportional to 2,641.19, 3,644.58 and 1,462.23
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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.