Home / 8,325.81-12,490.09-2,778.12

Finding the Fourth Proportional to 8,325.81, 12,490.09 and 2,778.12

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Solution

The fourth proportional to 8,325.81, 12,490.09 and 2,778.12 is: 4,167.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,325.81 : 12,490.09 = 2,778.12 : x
  2. Step 2: Convert to fraction form
    8,325.81/12,490.09 = 2,778.12/x
  3. Step 3: Cross multiply
    8,325.81x = 12,490.09 × 2,778.12
  4. Step 4: Simplify right side
    8,325.81x = 34,698,961.89
  5. Step 5: Solve for x
    x = 34,698,961.89/8,325.81
  6. Step 6: Final answer
    x = 4,167.64

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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.