Home / 1,413.38-2,118.90-535.38

Finding the Fourth Proportional to 1,413.38, 2,118.90 and 535.38

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Solution

The fourth proportional to 1,413.38, 2,118.90 and 535.38 is: 802.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.38 : 2,118.90 = 535.38 : x
  2. Step 2: Convert to fraction form
    1,413.38/2,118.90 = 535.38/x
  3. Step 3: Cross multiply
    1,413.38x = 2,118.90 × 535.38
  4. Step 4: Simplify right side
    1,413.38x = 1,134,416.68
  5. Step 5: Solve for x
    x = 1,134,416.68/1,413.38
  6. Step 6: Final answer
    x = 802.63

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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.