Home / 5,431.35-8,145.93-1,966.71

Finding the Fourth Proportional to 5,431.35, 8,145.93 and 1,966.71

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Solution

The fourth proportional to 5,431.35, 8,145.93 and 1,966.71 is: 2,949.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.35 : 8,145.93 = 1,966.71 : x
  2. Step 2: Convert to fraction form
    5,431.35/8,145.93 = 1,966.71/x
  3. Step 3: Cross multiply
    5,431.35x = 8,145.93 × 1,966.71
  4. Step 4: Simplify right side
    5,431.35x = 16,020,681.99
  5. Step 5: Solve for x
    x = 16,020,681.99/5,431.35
  6. Step 6: Final answer
    x = 2,949.67

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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.