Home / 8,210.35-12,312.69-3,278.67

Finding the Fourth Proportional to 8,210.35, 12,312.69 and 3,278.67

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Solution

The fourth proportional to 8,210.35, 12,312.69 and 3,278.67 is: 4,916.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,210.35 : 12,312.69 = 3,278.67 : x
  2. Step 2: Convert to fraction form
    8,210.35/12,312.69 = 3,278.67/x
  3. Step 3: Cross multiply
    8,210.35x = 12,312.69 × 3,278.67
  4. Step 4: Simplify right side
    8,210.35x = 40,369,247.32
  5. Step 5: Solve for x
    x = 40,369,247.32/8,210.35
  6. Step 6: Final answer
    x = 4,916.87

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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.