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Finding the Fourth Proportional to 1,984.42, 2,976.51 and 888.49

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Solution

The fourth proportional to 1,984.42, 2,976.51 and 888.49 is: 1,332.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.42 : 2,976.51 = 888.49 : x
  2. Step 2: Convert to fraction form
    1,984.42/2,976.51 = 888.49/x
  3. Step 3: Cross multiply
    1,984.42x = 2,976.51 × 888.49
  4. Step 4: Simplify right side
    1,984.42x = 2,644,601.42
  5. Step 5: Solve for x
    x = 2,644,601.42/1,984.42
  6. Step 6: Final answer
    x = 1,332.68

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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.