Home / 3,005.80-4,147.86-1,887.88

Finding the Fourth Proportional to 3,005.80, 4,147.86 and 1,887.88

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Solution

The fourth proportional to 3,005.80, 4,147.86 and 1,887.88 is: 2,605.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.80 : 4,147.86 = 1,887.88 : x
  2. Step 2: Convert to fraction form
    3,005.80/4,147.86 = 1,887.88/x
  3. Step 3: Cross multiply
    3,005.80x = 4,147.86 × 1,887.88
  4. Step 4: Simplify right side
    3,005.80x = 7,830,661.94
  5. Step 5: Solve for x
    x = 7,830,661.94/3,005.80
  6. Step 6: Final answer
    x = 2,605.18

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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.