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Finding the Fourth Proportional to 1,965.48, 2,948.64 and 666.96

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Solution

The fourth proportional to 1,965.48, 2,948.64 and 666.96 is: 1,000.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.48 : 2,948.64 = 666.96 : x
  2. Step 2: Convert to fraction form
    1,965.48/2,948.64 = 666.96/x
  3. Step 3: Cross multiply
    1,965.48x = 2,948.64 × 666.96
  4. Step 4: Simplify right side
    1,965.48x = 1,966,624.93
  5. Step 5: Solve for x
    x = 1,966,624.93/1,965.48
  6. Step 6: Final answer
    x = 1,000.58

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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.