Home / 2,087.80-2,879.95-1,237.30

Finding the Fourth Proportional to 2,087.80, 2,879.95 and 1,237.30

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Solution

The fourth proportional to 2,087.80, 2,879.95 and 1,237.30 is: 1,706.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.80 : 2,879.95 = 1,237.30 : x
  2. Step 2: Convert to fraction form
    2,087.80/2,879.95 = 1,237.30/x
  3. Step 3: Cross multiply
    2,087.80x = 2,879.95 × 1,237.30
  4. Step 4: Simplify right side
    2,087.80x = 3,563,362.14
  5. Step 5: Solve for x
    x = 3,563,362.14/2,087.80
  6. Step 6: Final answer
    x = 1,706.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.