Home / 1,485.14-2,049.80-1,236.20

Finding the Fourth Proportional to 1,485.14, 2,049.80 and 1,236.20

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Solution

The fourth proportional to 1,485.14, 2,049.80 and 1,236.20 is: 1,706.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.14 : 2,049.80 = 1,236.20 : x
  2. Step 2: Convert to fraction form
    1,485.14/2,049.80 = 1,236.20/x
  3. Step 3: Cross multiply
    1,485.14x = 2,049.80 × 1,236.20
  4. Step 4: Simplify right side
    1,485.14x = 2,533,962.76
  5. Step 5: Solve for x
    x = 2,533,962.76/1,485.14
  6. Step 6: Final answer
    x = 1,706.21

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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.