Home / 1,246.12-1,868.80-413.04

Finding the Fourth Proportional to 1,246.12, 1,868.80 and 413.04

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Solution

The fourth proportional to 1,246.12, 1,868.80 and 413.04 is: 619.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.12 : 1,868.80 = 413.04 : x
  2. Step 2: Convert to fraction form
    1,246.12/1,868.80 = 413.04/x
  3. Step 3: Cross multiply
    1,246.12x = 1,868.80 × 413.04
  4. Step 4: Simplify right side
    1,246.12x = 771,881.60
  5. Step 5: Solve for x
    x = 771,881.60/1,246.12
  6. Step 6: Final answer
    x = 619.43

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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.