Home / 1,393.37-2,080.98-1,206.87

Finding the Fourth Proportional to 1,393.37, 2,080.98 and 1,206.87

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Solution

The fourth proportional to 1,393.37, 2,080.98 and 1,206.87 is: 1,802.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393.37 : 2,080.98 = 1,206.87 : x
  2. Step 2: Convert to fraction form
    1,393.37/2,080.98 = 1,206.87/x
  3. Step 3: Cross multiply
    1,393.37x = 2,080.98 × 1,206.87
  4. Step 4: Simplify right side
    1,393.37x = 2,511,472.33
  5. Step 5: Solve for x
    x = 2,511,472.33/1,393.37
  6. Step 6: Final answer
    x = 1,802.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.