Home / 8,085.81-12,129.47-2,162.58

Finding the Fourth Proportional to 8,085.81, 12,129.47 and 2,162.58

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Solution

The fourth proportional to 8,085.81, 12,129.47 and 2,162.58 is: 3,244.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085.81 : 12,129.47 = 2,162.58 : x
  2. Step 2: Convert to fraction form
    8,085.81/12,129.47 = 2,162.58/x
  3. Step 3: Cross multiply
    8,085.81x = 12,129.47 × 2,162.58
  4. Step 4: Simplify right side
    8,085.81x = 26,230,938.42
  5. Step 5: Solve for x
    x = 26,230,938.42/8,085.81
  6. Step 6: Final answer
    x = 3,244.07

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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.