Home / 6,931.28-9,564.81-3,786.86

Finding the Fourth Proportional to 6,931.28, 9,564.81 and 3,786.86

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Solution

The fourth proportional to 6,931.28, 9,564.81 and 3,786.86 is: 5,225.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,931.28 : 9,564.81 = 3,786.86 : x
  2. Step 2: Convert to fraction form
    6,931.28/9,564.81 = 3,786.86/x
  3. Step 3: Cross multiply
    6,931.28x = 9,564.81 × 3,786.86
  4. Step 4: Simplify right side
    6,931.28x = 36,220,596.40
  5. Step 5: Solve for x
    x = 36,220,596.40/6,931.28
  6. Step 6: Final answer
    x = 5,225.67

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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.