Home / 8,415.50-11,613.31-4,638.57

Finding the Fourth Proportional to 8,415.50, 11,613.31 and 4,638.57

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Solution

The fourth proportional to 8,415.50, 11,613.31 and 4,638.57 is: 6,401.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.50 : 11,613.31 = 4,638.57 : x
  2. Step 2: Convert to fraction form
    8,415.50/11,613.31 = 4,638.57/x
  3. Step 3: Cross multiply
    8,415.50x = 11,613.31 × 4,638.57
  4. Step 4: Simplify right side
    8,415.50x = 53,869,096.22
  5. Step 5: Solve for x
    x = 53,869,096.22/8,415.50
  6. Step 6: Final answer
    x = 6,401.18

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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.