Home / 2,821.14-4,232.16-971.80

Finding the Fourth Proportional to 2,821.14, 4,232.16 and 971.80

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Solution

The fourth proportional to 2,821.14, 4,232.16 and 971.80 is: 1,457.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.14 : 4,232.16 = 971.80 : x
  2. Step 2: Convert to fraction form
    2,821.14/4,232.16 = 971.80/x
  3. Step 3: Cross multiply
    2,821.14x = 4,232.16 × 971.80
  4. Step 4: Simplify right side
    2,821.14x = 4,112,813.09
  5. Step 5: Solve for x
    x = 4,112,813.09/2,821.14
  6. Step 6: Final answer
    x = 1,457.86

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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.