Home / 5,513.81-8,271.97-1,618.20

Finding the Fourth Proportional to 5,513.81, 8,271.97 and 1,618.20

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Solution

The fourth proportional to 5,513.81, 8,271.97 and 1,618.20 is: 2,427.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,513.81 : 8,271.97 = 1,618.20 : x
  2. Step 2: Convert to fraction form
    5,513.81/8,271.97 = 1,618.20/x
  3. Step 3: Cross multiply
    5,513.81x = 8,271.97 × 1,618.20
  4. Step 4: Simplify right side
    5,513.81x = 13,385,697.81
  5. Step 5: Solve for x
    x = 13,385,697.81/5,513.81
  6. Step 6: Final answer
    x = 2,427.67

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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.