Home / 8,085.12-12,124.64-2,818.77

Finding the Fourth Proportional to 8,085.12, 12,124.64 and 2,818.77

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Solution

The fourth proportional to 8,085.12, 12,124.64 and 2,818.77 is: 4,227.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085.12 : 12,124.64 = 2,818.77 : x
  2. Step 2: Convert to fraction form
    8,085.12/12,124.64 = 2,818.77/x
  3. Step 3: Cross multiply
    8,085.12x = 12,124.64 × 2,818.77
  4. Step 4: Simplify right side
    8,085.12x = 34,176,571.49
  5. Step 5: Solve for x
    x = 34,176,571.49/8,085.12
  6. Step 6: Final answer
    x = 4,227.10

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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.