Home / 8,139.20-11,230.44-4,782.56

Finding the Fourth Proportional to 8,139.20, 11,230.44 and 4,782.56

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Solution

The fourth proportional to 8,139.20, 11,230.44 and 4,782.56 is: 6,598.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.20 : 11,230.44 = 4,782.56 : x
  2. Step 2: Convert to fraction form
    8,139.20/11,230.44 = 4,782.56/x
  3. Step 3: Cross multiply
    8,139.20x = 11,230.44 × 4,782.56
  4. Step 4: Simplify right side
    8,139.20x = 53,710,253.13
  5. Step 5: Solve for x
    x = 53,710,253.13/8,139.20
  6. Step 6: Final answer
    x = 6,598.96

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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.