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Finding the Fourth Proportional to 1,926.61, 2,889.75 and 756.37

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Solution

The fourth proportional to 1,926.61, 2,889.75 and 756.37 is: 1,134.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926.61 : 2,889.75 = 756.37 : x
  2. Step 2: Convert to fraction form
    1,926.61/2,889.75 = 756.37/x
  3. Step 3: Cross multiply
    1,926.61x = 2,889.75 × 756.37
  4. Step 4: Simplify right side
    1,926.61x = 2,185,720.21
  5. Step 5: Solve for x
    x = 2,185,720.21/1,926.61
  6. Step 6: Final answer
    x = 1,134.49

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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.