Home / 8,075.50-11,147.79-5,687.62

Finding the Fourth Proportional to 8,075.50, 11,147.79 and 5,687.62

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Solution

The fourth proportional to 8,075.50, 11,147.79 and 5,687.62 is: 7,851.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.50 : 11,147.79 = 5,687.62 : x
  2. Step 2: Convert to fraction form
    8,075.50/11,147.79 = 5,687.62/x
  3. Step 3: Cross multiply
    8,075.50x = 11,147.79 × 5,687.62
  4. Step 4: Simplify right side
    8,075.50x = 63,404,393.36
  5. Step 5: Solve for x
    x = 63,404,393.36/8,075.50
  6. Step 6: Final answer
    x = 7,851.45

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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.