Home / 1,935.30-2,905.65-1,206.30

Finding the Fourth Proportional to 1,935.30, 2,905.65 and 1,206.30

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Solution

The fourth proportional to 1,935.30, 2,905.65 and 1,206.30 is: 1,811.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,935.30 : 2,905.65 = 1,206.30 : x
  2. Step 2: Convert to fraction form
    1,935.30/2,905.65 = 1,206.30/x
  3. Step 3: Cross multiply
    1,935.30x = 2,905.65 × 1,206.30
  4. Step 4: Simplify right side
    1,935.30x = 3,505,085.60
  5. Step 5: Solve for x
    x = 3,505,085.60/1,935.30
  6. Step 6: Final answer
    x = 1,811.13

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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.