Home / 2,220.99-3,065.67-1,435.02

Finding the Fourth Proportional to 2,220.99, 3,065.67 and 1,435.02

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Solution

The fourth proportional to 2,220.99, 3,065.67 and 1,435.02 is: 1,980.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.99 : 3,065.67 = 1,435.02 : x
  2. Step 2: Convert to fraction form
    2,220.99/3,065.67 = 1,435.02/x
  3. Step 3: Cross multiply
    2,220.99x = 3,065.67 × 1,435.02
  4. Step 4: Simplify right side
    2,220.99x = 4,399,297.76
  5. Step 5: Solve for x
    x = 4,399,297.76/2,220.99
  6. Step 6: Final answer
    x = 1,980.78

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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.