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Finding the Fourth Proportional to 3,603.54, 5,407.74 and 1,412.00

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Solution

The fourth proportional to 3,603.54, 5,407.74 and 1,412.00 is: 2,118.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,603.54 : 5,407.74 = 1,412.00 : x
  2. Step 2: Convert to fraction form
    3,603.54/5,407.74 = 1,412.00/x
  3. Step 3: Cross multiply
    3,603.54x = 5,407.74 × 1,412.00
  4. Step 4: Simplify right side
    3,603.54x = 7,635,701.84
  5. Step 5: Solve for x
    x = 7,635,701.84/3,603.54
  6. Step 6: Final answer
    x = 2,118.94

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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.