Home / 1,329.40-1,988.22-1,184.21

Finding the Fourth Proportional to 1,329.40, 1,988.22 and 1,184.21

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Solution

The fourth proportional to 1,329.40, 1,988.22 and 1,184.21 is: 1,771.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.40 : 1,988.22 = 1,184.21 : x
  2. Step 2: Convert to fraction form
    1,329.40/1,988.22 = 1,184.21/x
  3. Step 3: Cross multiply
    1,329.40x = 1,988.22 × 1,184.21
  4. Step 4: Simplify right side
    1,329.40x = 2,354,470.01
  5. Step 5: Solve for x
    x = 2,354,470.01/1,329.40
  6. Step 6: Final answer
    x = 1,771.08

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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.