Home / 7,764.66-10,715.49-4,228.20

Finding the Fourth Proportional to 7,764.66, 10,715.49 and 4,228.20

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Solution

The fourth proportional to 7,764.66, 10,715.49 and 4,228.20 is: 5,835.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764.66 : 10,715.49 = 4,228.20 : x
  2. Step 2: Convert to fraction form
    7,764.66/10,715.49 = 4,228.20/x
  3. Step 3: Cross multiply
    7,764.66x = 10,715.49 × 4,228.20
  4. Step 4: Simplify right side
    7,764.66x = 45,307,234.82
  5. Step 5: Solve for x
    x = 45,307,234.82/7,764.66
  6. Step 6: Final answer
    x = 5,835.06

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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.