Home / 5,636.18-7,777.77-3,118.21

Finding the Fourth Proportional to 5,636.18, 7,777.77 and 3,118.21

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Solution

The fourth proportional to 5,636.18, 7,777.77 and 3,118.21 is: 4,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,636.18 : 7,777.77 = 3,118.21 : x
  2. Step 2: Convert to fraction form
    5,636.18/7,777.77 = 3,118.21/x
  3. Step 3: Cross multiply
    5,636.18x = 7,777.77 × 3,118.21
  4. Step 4: Simplify right side
    5,636.18x = 24,252,750.34
  5. Step 5: Solve for x
    x = 24,252,750.34/5,636.18
  6. Step 6: Final answer
    x = 4,303.05

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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.