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Finding the Fourth Proportional to 1,926.64, 2,888.30 and 938.09

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Solution

The fourth proportional to 1,926.64, 2,888.30 and 938.09 is: 1,406.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926.64 : 2,888.30 = 938.09 : x
  2. Step 2: Convert to fraction form
    1,926.64/2,888.30 = 938.09/x
  3. Step 3: Cross multiply
    1,926.64x = 2,888.30 × 938.09
  4. Step 4: Simplify right side
    1,926.64x = 2,709,468.01
  5. Step 5: Solve for x
    x = 2,709,468.01/1,926.64
  6. Step 6: Final answer
    x = 1,406.31

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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.