Home / 5,540.81-8,312.76-2,421.09

Finding the Fourth Proportional to 5,540.81, 8,312.76 and 2,421.09

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Solution

The fourth proportional to 5,540.81, 8,312.76 and 2,421.09 is: 3,632.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,540.81 : 8,312.76 = 2,421.09 : x
  2. Step 2: Convert to fraction form
    5,540.81/8,312.76 = 2,421.09/x
  3. Step 3: Cross multiply
    5,540.81x = 8,312.76 × 2,421.09
  4. Step 4: Simplify right side
    5,540.81x = 20,125,940.11
  5. Step 5: Solve for x
    x = 20,125,940.11/5,540.81
  6. Step 6: Final answer
    x = 3,632.31

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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.