Home / 2,160.37-2,980.85-1,374.57

Finding the Fourth Proportional to 2,160.37, 2,980.85 and 1,374.57

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Solution

The fourth proportional to 2,160.37, 2,980.85 and 1,374.57 is: 1,896.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.37 : 2,980.85 = 1,374.57 : x
  2. Step 2: Convert to fraction form
    2,160.37/2,980.85 = 1,374.57/x
  3. Step 3: Cross multiply
    2,160.37x = 2,980.85 × 1,374.57
  4. Step 4: Simplify right side
    2,160.37x = 4,097,387.84
  5. Step 5: Solve for x
    x = 4,097,387.84/2,160.37
  6. Step 6: Final answer
    x = 1,896.61

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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.