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Finding the Fourth Proportional to 7,075.68, 9,764.52 and 3,889.14

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Solution

The fourth proportional to 7,075.68, 9,764.52 and 3,889.14 is: 5,367.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,075.68 : 9,764.52 = 3,889.14 : x
  2. Step 2: Convert to fraction form
    7,075.68/9,764.52 = 3,889.14/x
  3. Step 3: Cross multiply
    7,075.68x = 9,764.52 × 3,889.14
  4. Step 4: Simplify right side
    7,075.68x = 37,975,585.31
  5. Step 5: Solve for x
    x = 37,975,585.31/7,075.68
  6. Step 6: Final answer
    x = 5,367.06

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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.