Home / 8,721.57-12,035.78-4,742.67

Finding the Fourth Proportional to 8,721.57, 12,035.78 and 4,742.67

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Solution

The fourth proportional to 8,721.57, 12,035.78 and 4,742.67 is: 6,544.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.57 : 12,035.78 = 4,742.67 : x
  2. Step 2: Convert to fraction form
    8,721.57/12,035.78 = 4,742.67/x
  3. Step 3: Cross multiply
    8,721.57x = 12,035.78 × 4,742.67
  4. Step 4: Simplify right side
    8,721.57x = 57,081,709.02
  5. Step 5: Solve for x
    x = 57,081,709.02/8,721.57
  6. Step 6: Final answer
    x = 6,544.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.