Home / 8,386.82-12,586.26-3,122.55

Finding the Fourth Proportional to 8,386.82, 12,586.26 and 3,122.55

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Solution

The fourth proportional to 8,386.82, 12,586.26 and 3,122.55 is: 4,686.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.82 : 12,586.26 = 3,122.55 : x
  2. Step 2: Convert to fraction form
    8,386.82/12,586.26 = 3,122.55/x
  3. Step 3: Cross multiply
    8,386.82x = 12,586.26 × 3,122.55
  4. Step 4: Simplify right side
    8,386.82x = 39,301,226.16
  5. Step 5: Solve for x
    x = 39,301,226.16/8,386.82
  6. Step 6: Final answer
    x = 4,686.07

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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.