Home / 5,127.18-7,078.23-4,107.80

Finding the Fourth Proportional to 5,127.18, 7,078.23 and 4,107.80

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Solution

The fourth proportional to 5,127.18, 7,078.23 and 4,107.80 is: 5,670.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.18 : 7,078.23 = 4,107.80 : x
  2. Step 2: Convert to fraction form
    5,127.18/7,078.23 = 4,107.80/x
  3. Step 3: Cross multiply
    5,127.18x = 7,078.23 × 4,107.80
  4. Step 4: Simplify right side
    5,127.18x = 29,075,917.80
  5. Step 5: Solve for x
    x = 29,075,917.80/5,127.18
  6. Step 6: Final answer
    x = 5,670.94

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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.