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Finding the Fourth Proportional to 1,975.79, 2,964.12 and 570.20

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Solution

The fourth proportional to 1,975.79, 2,964.12 and 570.20 is: 855.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.79 : 2,964.12 = 570.20 : x
  2. Step 2: Convert to fraction form
    1,975.79/2,964.12 = 570.20/x
  3. Step 3: Cross multiply
    1,975.79x = 2,964.12 × 570.20
  4. Step 4: Simplify right side
    1,975.79x = 1,690,140.94
  5. Step 5: Solve for x
    x = 1,690,140.94/1,975.79
  6. Step 6: Final answer
    x = 855.43

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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.