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Finding the Fourth Proportional to 1,956.66, 2,933.15 and 657.21

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Solution

The fourth proportional to 1,956.66, 2,933.15 and 657.21 is: 985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,956.66 : 2,933.15 = 657.21 : x
  2. Step 2: Convert to fraction form
    1,956.66/2,933.15 = 657.21/x
  3. Step 3: Cross multiply
    1,956.66x = 2,933.15 × 657.21
  4. Step 4: Simplify right side
    1,956.66x = 1,927,699.56
  5. Step 5: Solve for x
    x = 1,927,699.56/1,956.66
  6. Step 6: Final answer
    x = 985.20

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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.