Home / 7,683.80-11,518.21-4,170.63

Finding the Fourth Proportional to 7,683.80, 11,518.21 and 4,170.63

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Solution

The fourth proportional to 7,683.80, 11,518.21 and 4,170.63 is: 6,251.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,683.80 : 11,518.21 = 4,170.63 : x
  2. Step 2: Convert to fraction form
    7,683.80/11,518.21 = 4,170.63/x
  3. Step 3: Cross multiply
    7,683.80x = 11,518.21 × 4,170.63
  4. Step 4: Simplify right side
    7,683.80x = 48,038,192.17
  5. Step 5: Solve for x
    x = 48,038,192.17/7,683.80
  6. Step 6: Final answer
    x = 6,251.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.