Home / 3,923.70-5,416.77-2,430.90

Finding the Fourth Proportional to 3,923.70, 5,416.77 and 2,430.90

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Solution

The fourth proportional to 3,923.70, 5,416.77 and 2,430.90 is: 3,355.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.70 : 5,416.77 = 2,430.90 : x
  2. Step 2: Convert to fraction form
    3,923.70/5,416.77 = 2,430.90/x
  3. Step 3: Cross multiply
    3,923.70x = 5,416.77 × 2,430.90
  4. Step 4: Simplify right side
    3,923.70x = 13,167,626.19
  5. Step 5: Solve for x
    x = 13,167,626.19/3,923.70
  6. Step 6: Final answer
    x = 3,355.92

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1.5x scale

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.