Home / 1,688.44-2,519.86-1,644.70

Finding the Fourth Proportional to 1,688.44, 2,519.86 and 1,644.70

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Solution

The fourth proportional to 1,688.44, 2,519.86 and 1,644.70 is: 2,454.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.44 : 2,519.86 = 1,644.70 : x
  2. Step 2: Convert to fraction form
    1,688.44/2,519.86 = 1,644.70/x
  3. Step 3: Cross multiply
    1,688.44x = 2,519.86 × 1,644.70
  4. Step 4: Simplify right side
    1,688.44x = 4,144,413.74
  5. Step 5: Solve for x
    x = 4,144,413.74/1,688.44
  6. Step 6: Final answer
    x = 2,454.58

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1.5x scale

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.