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Finding the Fourth Proportional to 2,840.65, 4,261.17 and 992.23

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Solution

The fourth proportional to 2,840.65, 4,261.17 and 992.23 is: 1,488.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.65 : 4,261.17 = 992.23 : x
  2. Step 2: Convert to fraction form
    2,840.65/4,261.17 = 992.23/x
  3. Step 3: Cross multiply
    2,840.65x = 4,261.17 × 992.23
  4. Step 4: Simplify right side
    2,840.65x = 4,228,060.71
  5. Step 5: Solve for x
    x = 4,228,060.71/2,840.65
  6. Step 6: Final answer
    x = 1,488.41

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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.