Home / 2,090.92-2,887.78-1,426.60

Finding the Fourth Proportional to 2,090.92, 2,887.78 and 1,426.60

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Solution

The fourth proportional to 2,090.92, 2,887.78 and 1,426.60 is: 1,970.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.92 : 2,887.78 = 1,426.60 : x
  2. Step 2: Convert to fraction form
    2,090.92/2,887.78 = 1,426.60/x
  3. Step 3: Cross multiply
    2,090.92x = 2,887.78 × 1,426.60
  4. Step 4: Simplify right side
    2,090.92x = 4,119,706.95
  5. Step 5: Solve for x
    x = 4,119,706.95/2,090.92
  6. Step 6: Final answer
    x = 1,970.28

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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.