Home / 3,923.40-5,879.70-2,603.40

Finding the Fourth Proportional to 3,923.40, 5,879.70 and 2,603.40

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Solution

The fourth proportional to 3,923.40, 5,879.70 and 2,603.40 is: 3,901.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.40 : 5,879.70 = 2,603.40 : x
  2. Step 2: Convert to fraction form
    3,923.40/5,879.70 = 2,603.40/x
  3. Step 3: Cross multiply
    3,923.40x = 5,879.70 × 2,603.40
  4. Step 4: Simplify right side
    3,923.40x = 15,307,210.98
  5. Step 5: Solve for x
    x = 15,307,210.98/3,923.40
  6. Step 6: Final answer
    x = 3,901.52

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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.