Home / 1,934.20-2,901.30-1,905.40

Finding the Fourth Proportional to 1,934.20, 2,901.30 and 1,905.40

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Solution

The fourth proportional to 1,934.20, 2,901.30 and 1,905.40 is: 2,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,934.20 : 2,901.30 = 1,905.40 : x
  2. Step 2: Convert to fraction form
    1,934.20/2,901.30 = 1,905.40/x
  3. Step 3: Cross multiply
    1,934.20x = 2,901.30 × 1,905.40
  4. Step 4: Simplify right side
    1,934.20x = 5,528,137.02
  5. Step 5: Solve for x
    x = 5,528,137.02/1,934.20
  6. Step 6: Final answer
    x = 2,858.10

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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.