Home / 2,971.20-4,448.70-2,317.80

Finding the Fourth Proportional to 2,971.20, 4,448.70 and 2,317.80

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Solution

The fourth proportional to 2,971.20, 4,448.70 and 2,317.80 is: 3,470.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,971.20 : 4,448.70 = 2,317.80 : x
  2. Step 2: Convert to fraction form
    2,971.20/4,448.70 = 2,317.80/x
  3. Step 3: Cross multiply
    2,971.20x = 4,448.70 × 2,317.80
  4. Step 4: Simplify right side
    2,971.20x = 10,311,196.86
  5. Step 5: Solve for x
    x = 10,311,196.86/2,971.20
  6. Step 6: Final answer
    x = 3,470.38

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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.