Home / 5,638.91-7,779.08-3,650.10

Finding the Fourth Proportional to 5,638.91, 7,779.08 and 3,650.10

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Solution

The fourth proportional to 5,638.91, 7,779.08 and 3,650.10 is: 5,035.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.91 : 7,779.08 = 3,650.10 : x
  2. Step 2: Convert to fraction form
    5,638.91/7,779.08 = 3,650.10/x
  3. Step 3: Cross multiply
    5,638.91x = 7,779.08 × 3,650.10
  4. Step 4: Simplify right side
    5,638.91x = 28,394,401.66
  5. Step 5: Solve for x
    x = 28,394,401.66/5,638.91
  6. Step 6: Final answer
    x = 5,035.45

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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.