Home / 2,122.15-2,928.93-1,237.95

Finding the Fourth Proportional to 2,122.15, 2,928.93 and 1,237.95

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Solution

The fourth proportional to 2,122.15, 2,928.93 and 1,237.95 is: 1,708.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.15 : 2,928.93 = 1,237.95 : x
  2. Step 2: Convert to fraction form
    2,122.15/2,928.93 = 1,237.95/x
  3. Step 3: Cross multiply
    2,122.15x = 2,928.93 × 1,237.95
  4. Step 4: Simplify right side
    2,122.15x = 3,625,868.89
  5. Step 5: Solve for x
    x = 3,625,868.89/2,122.15
  6. Step 6: Final answer
    x = 1,708.58

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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.