Home / 2,887.70-4,331.97-1,328.31

Finding the Fourth Proportional to 2,887.70, 4,331.97 and 1,328.31

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Solution

The fourth proportional to 2,887.70, 4,331.97 and 1,328.31 is: 1,992.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.70 : 4,331.97 = 1,328.31 : x
  2. Step 2: Convert to fraction form
    2,887.70/4,331.97 = 1,328.31/x
  3. Step 3: Cross multiply
    2,887.70x = 4,331.97 × 1,328.31
  4. Step 4: Simplify right side
    2,887.70x = 5,754,199.07
  5. Step 5: Solve for x
    x = 5,754,199.07/2,887.70
  6. Step 6: Final answer
    x = 1,992.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.