Home / 1,831.70-2,739.55-1,638.10

Finding the Fourth Proportional to 1,831.70, 2,739.55 and 1,638.10

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Solution

The fourth proportional to 1,831.70, 2,739.55 and 1,638.10 is: 2,450.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,831.70 : 2,739.55 = 1,638.10 : x
  2. Step 2: Convert to fraction form
    1,831.70/2,739.55 = 1,638.10/x
  3. Step 3: Cross multiply
    1,831.70x = 2,739.55 × 1,638.10
  4. Step 4: Simplify right side
    1,831.70x = 4,487,656.86
  5. Step 5: Solve for x
    x = 4,487,656.86/1,831.70
  6. Step 6: Final answer
    x = 2,450.00

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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.