Home / 5,638.39-7,779.57-3,401.57

Finding the Fourth Proportional to 5,638.39, 7,779.57 and 3,401.57

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Solution

The fourth proportional to 5,638.39, 7,779.57 and 3,401.57 is: 4,693.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.39 : 7,779.57 = 3,401.57 : x
  2. Step 2: Convert to fraction form
    5,638.39/7,779.57 = 3,401.57/x
  3. Step 3: Cross multiply
    5,638.39x = 7,779.57 × 3,401.57
  4. Step 4: Simplify right side
    5,638.39x = 26,462,751.92
  5. Step 5: Solve for x
    x = 26,462,751.92/5,638.39
  6. Step 6: Final answer
    x = 4,693.32

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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.