Home / 7,750.20-10,695.15-4,213.50

Finding the Fourth Proportional to 7,750.20, 10,695.15 and 4,213.50

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Solution

The fourth proportional to 7,750.20, 10,695.15 and 4,213.50 is: 5,814.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,750.20 : 10,695.15 = 4,213.50 : x
  2. Step 2: Convert to fraction form
    7,750.20/10,695.15 = 4,213.50/x
  3. Step 3: Cross multiply
    7,750.20x = 10,695.15 × 4,213.50
  4. Step 4: Simplify right side
    7,750.20x = 45,064,014.53
  5. Step 5: Solve for x
    x = 45,064,014.53/7,750.20
  6. Step 6: Final answer
    x = 5,814.56

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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.