Home / 1,393.15-2,071.80-1,349.35

Finding the Fourth Proportional to 1,393.15, 2,071.80 and 1,349.35

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Solution

The fourth proportional to 1,393.15, 2,071.80 and 1,349.35 is: 2,006.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393.15 : 2,071.80 = 1,349.35 : x
  2. Step 2: Convert to fraction form
    1,393.15/2,071.80 = 1,349.35/x
  3. Step 3: Cross multiply
    1,393.15x = 2,071.80 × 1,349.35
  4. Step 4: Simplify right side
    1,393.15x = 2,795,583.33
  5. Step 5: Solve for x
    x = 2,795,583.33/1,393.15
  6. Step 6: Final answer
    x = 2,006.66

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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.