Home / 5,636.34-7,779.38-3,278.79

Finding the Fourth Proportional to 5,636.34, 7,779.38 and 3,278.79

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Solution

The fourth proportional to 5,636.34, 7,779.38 and 3,278.79 is: 4,525.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,636.34 : 7,779.38 = 3,278.79 : x
  2. Step 2: Convert to fraction form
    5,636.34/7,779.38 = 3,278.79/x
  3. Step 3: Cross multiply
    5,636.34x = 7,779.38 × 3,278.79
  4. Step 4: Simplify right side
    5,636.34x = 25,506,936.96
  5. Step 5: Solve for x
    x = 25,506,936.96/5,636.34
  6. Step 6: Final answer
    x = 4,525.44

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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.