Home / 7,050.78-9,729.72-3,907.44

Finding the Fourth Proportional to 7,050.78, 9,729.72 and 3,907.44

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Solution

The fourth proportional to 7,050.78, 9,729.72 and 3,907.44 is: 5,392.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,050.78 : 9,729.72 = 3,907.44 : x
  2. Step 2: Convert to fraction form
    7,050.78/9,729.72 = 3,907.44/x
  3. Step 3: Cross multiply
    7,050.78x = 9,729.72 × 3,907.44
  4. Step 4: Simplify right side
    7,050.78x = 38,018,297.12
  5. Step 5: Solve for x
    x = 38,018,297.12/7,050.78
  6. Step 6: Final answer
    x = 5,392.07

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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.