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Finding the Fourth Proportional to 1,966.10, 2,948.56 and 579.17

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Solution

The fourth proportional to 1,966.10, 2,948.56 and 579.17 is: 868.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.10 : 2,948.56 = 579.17 : x
  2. Step 2: Convert to fraction form
    1,966.10/2,948.56 = 579.17/x
  3. Step 3: Cross multiply
    1,966.10x = 2,948.56 × 579.17
  4. Step 4: Simplify right side
    1,966.10x = 1,707,723.42
  5. Step 5: Solve for x
    x = 1,707,723.42/1,966.10
  6. Step 6: Final answer
    x = 868.59

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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.