Home / 5,636.86-7,779.36-3,398.74

Finding the Fourth Proportional to 5,636.86, 7,779.36 and 3,398.74

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Solution

The fourth proportional to 5,636.86, 7,779.36 and 3,398.74 is: 4,690.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,636.86 : 7,779.36 = 3,398.74 : x
  2. Step 2: Convert to fraction form
    5,636.86/7,779.36 = 3,398.74/x
  3. Step 3: Cross multiply
    5,636.86x = 7,779.36 × 3,398.74
  4. Step 4: Simplify right side
    5,636.86x = 26,440,022.01
  5. Step 5: Solve for x
    x = 26,440,022.01/5,636.86
  6. Step 6: Final answer
    x = 4,690.56

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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.