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Finding the Fourth Proportional to 1,914.32, 2,871.48 and 940.24

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Solution

The fourth proportional to 1,914.32, 2,871.48 and 940.24 is: 1,410.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.32 : 2,871.48 = 940.24 : x
  2. Step 2: Convert to fraction form
    1,914.32/2,871.48 = 940.24/x
  3. Step 3: Cross multiply
    1,914.32x = 2,871.48 × 940.24
  4. Step 4: Simplify right side
    1,914.32x = 2,699,880.36
  5. Step 5: Solve for x
    x = 2,699,880.36/1,914.32
  6. Step 6: Final answer
    x = 1,410.36

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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.