Home / 8,237.21-12,357.78-2,690.57

Finding the Fourth Proportional to 8,237.21, 12,357.78 and 2,690.57

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Solution

The fourth proportional to 8,237.21, 12,357.78 and 2,690.57 is: 4,036.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,237.21 : 12,357.78 = 2,690.57 : x
  2. Step 2: Convert to fraction form
    8,237.21/12,357.78 = 2,690.57/x
  3. Step 3: Cross multiply
    8,237.21x = 12,357.78 × 2,690.57
  4. Step 4: Simplify right side
    8,237.21x = 33,249,410.35
  5. Step 5: Solve for x
    x = 33,249,410.35/8,237.21
  6. Step 6: Final answer
    x = 4,036.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.