Home / 1,821.06-2,512.26-1,429.20

Finding the Fourth Proportional to 1,821.06, 2,512.26 and 1,429.20

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Solution

The fourth proportional to 1,821.06, 2,512.26 and 1,429.20 is: 1,971.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.06 : 2,512.26 = 1,429.20 : x
  2. Step 2: Convert to fraction form
    1,821.06/2,512.26 = 1,429.20/x
  3. Step 3: Cross multiply
    1,821.06x = 2,512.26 × 1,429.20
  4. Step 4: Simplify right side
    1,821.06x = 3,590,521.99
  5. Step 5: Solve for x
    x = 3,590,521.99/1,821.06
  6. Step 6: Final answer
    x = 1,971.67

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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.