Home / 1,983.86-2,737.08-1,320.81

Finding the Fourth Proportional to 1,983.86, 2,737.08 and 1,320.81

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Solution

The fourth proportional to 1,983.86, 2,737.08 and 1,320.81 is: 1,822.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.86 : 2,737.08 = 1,320.81 : x
  2. Step 2: Convert to fraction form
    1,983.86/2,737.08 = 1,320.81/x
  3. Step 3: Cross multiply
    1,983.86x = 2,737.08 × 1,320.81
  4. Step 4: Simplify right side
    1,983.86x = 3,615,162.63
  5. Step 5: Solve for x
    x = 3,615,162.63/1,983.86
  6. Step 6: Final answer
    x = 1,822.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.