Home / 1,890.02-2,609.15-1,182.21

Finding the Fourth Proportional to 1,890.02, 2,609.15 and 1,182.21

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Solution

The fourth proportional to 1,890.02, 2,609.15 and 1,182.21 is: 1,632.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.02 : 2,609.15 = 1,182.21 : x
  2. Step 2: Convert to fraction form
    1,890.02/2,609.15 = 1,182.21/x
  3. Step 3: Cross multiply
    1,890.02x = 2,609.15 × 1,182.21
  4. Step 4: Simplify right side
    1,890.02x = 3,084,563.22
  5. Step 5: Solve for x
    x = 3,084,563.22/1,890.02
  6. Step 6: Final answer
    x = 1,632.03

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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.