Home / 4,485.81-6,729.80-1,407.81

Finding the Fourth Proportional to 4,485.81, 6,729.80 and 1,407.81

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Solution

The fourth proportional to 4,485.81, 6,729.80 and 1,407.81 is: 2,112.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,485.81 : 6,729.80 = 1,407.81 : x
  2. Step 2: Convert to fraction form
    4,485.81/6,729.80 = 1,407.81/x
  3. Step 3: Cross multiply
    4,485.81x = 6,729.80 × 1,407.81
  4. Step 4: Simplify right side
    4,485.81x = 9,474,279.74
  5. Step 5: Solve for x
    x = 9,474,279.74/4,485.81
  6. Step 6: Final answer
    x = 2,112.06

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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.