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Finding the Fourth Proportional to 1,840.86, 2,762.19 and 745.38

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Solution

The fourth proportional to 1,840.86, 2,762.19 and 745.38 is: 1,118.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,840.86 : 2,762.19 = 745.38 : x
  2. Step 2: Convert to fraction form
    1,840.86/2,762.19 = 745.38/x
  3. Step 3: Cross multiply
    1,840.86x = 2,762.19 × 745.38
  4. Step 4: Simplify right side
    1,840.86x = 2,058,881.18
  5. Step 5: Solve for x
    x = 2,058,881.18/1,840.86
  6. Step 6: Final answer
    x = 1,118.43

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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.