Home / 2,189.40-3,284.10-1,411.80

Finding the Fourth Proportional to 2,189.40, 3,284.10 and 1,411.80

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Solution

The fourth proportional to 2,189.40, 3,284.10 and 1,411.80 is: 2,117.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.40 : 3,284.10 = 1,411.80 : x
  2. Step 2: Convert to fraction form
    2,189.40/3,284.10 = 1,411.80/x
  3. Step 3: Cross multiply
    2,189.40x = 3,284.10 × 1,411.80
  4. Step 4: Simplify right side
    2,189.40x = 4,636,492.38
  5. Step 5: Solve for x
    x = 4,636,492.38/2,189.40
  6. Step 6: Final answer
    x = 2,117.70

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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.