Home / 1,664.40-2,496.60-1,640.10

Finding the Fourth Proportional to 1,664.40, 2,496.60 and 1,640.10

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Solution

The fourth proportional to 1,664.40, 2,496.60 and 1,640.10 is: 2,460.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.40 : 2,496.60 = 1,640.10 : x
  2. Step 2: Convert to fraction form
    1,664.40/2,496.60 = 1,640.10/x
  3. Step 3: Cross multiply
    1,664.40x = 2,496.60 × 1,640.10
  4. Step 4: Simplify right side
    1,664.40x = 4,094,673.66
  5. Step 5: Solve for x
    x = 4,094,673.66/1,664.40
  6. Step 6: Final answer
    x = 2,460.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.