Home / 7,685.30-11,520.65-4,393.86

Finding the Fourth Proportional to 7,685.30, 11,520.65 and 4,393.86

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Solution

The fourth proportional to 7,685.30, 11,520.65 and 4,393.86 is: 6,586.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.30 : 11,520.65 = 4,393.86 : x
  2. Step 2: Convert to fraction form
    7,685.30/11,520.65 = 4,393.86/x
  3. Step 3: Cross multiply
    7,685.30x = 11,520.65 × 4,393.86
  4. Step 4: Simplify right side
    7,685.30x = 50,620,101.24
  5. Step 5: Solve for x
    x = 50,620,101.24/7,685.30
  6. Step 6: Final answer
    x = 6,586.62

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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.