Home / 1,664.27-2,496.37-431.68

Finding the Fourth Proportional to 1,664.27, 2,496.37 and 431.68

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Solution

The fourth proportional to 1,664.27, 2,496.37 and 431.68 is: 647.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.27 : 2,496.37 = 431.68 : x
  2. Step 2: Convert to fraction form
    1,664.27/2,496.37 = 431.68/x
  3. Step 3: Cross multiply
    1,664.27x = 2,496.37 × 431.68
  4. Step 4: Simplify right side
    1,664.27x = 1,077,618.36
  5. Step 5: Solve for x
    x = 1,077,618.36/1,664.27
  6. Step 6: Final answer
    x = 647.50

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Double scale
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1.5x scale

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.