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Finding the Fourth Proportional to 1,933.71, 2,900.25 and 763.05

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Solution

The fourth proportional to 1,933.71, 2,900.25 and 763.05 is: 1,144.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,933.71 : 2,900.25 = 763.05 : x
  2. Step 2: Convert to fraction form
    1,933.71/2,900.25 = 763.05/x
  3. Step 3: Cross multiply
    1,933.71x = 2,900.25 × 763.05
  4. Step 4: Simplify right side
    1,933.71x = 2,213,035.76
  5. Step 5: Solve for x
    x = 2,213,035.76/1,933.71
  6. Step 6: Final answer
    x = 1,144.45

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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.