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Finding the Fourth Proportional to 2,912.40, 4,018.92 and 1,733.60

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Solution

The fourth proportional to 2,912.40, 4,018.92 and 1,733.60 is: 2,392.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.40 : 4,018.92 = 1,733.60 : x
  2. Step 2: Convert to fraction form
    2,912.40/4,018.92 = 1,733.60/x
  3. Step 3: Cross multiply
    2,912.40x = 4,018.92 × 1,733.60
  4. Step 4: Simplify right side
    2,912.40x = 6,967,199.71
  5. Step 5: Solve for x
    x = 6,967,199.71/2,912.40
  6. Step 6: Final answer
    x = 2,392.25

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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.