Home / 2,887.85-3,986.12-1,693.13

Finding the Fourth Proportional to 2,887.85, 3,986.12 and 1,693.13

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Solution

The fourth proportional to 2,887.85, 3,986.12 and 1,693.13 is: 2,337.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.85 : 3,986.12 = 1,693.13 : x
  2. Step 2: Convert to fraction form
    2,887.85/3,986.12 = 1,693.13/x
  3. Step 3: Cross multiply
    2,887.85x = 3,986.12 × 1,693.13
  4. Step 4: Simplify right side
    2,887.85x = 6,749,003.66
  5. Step 5: Solve for x
    x = 6,749,003.66/2,887.85
  6. Step 6: Final answer
    x = 2,337.03

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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.