Home / 8,320.76-12,477.48-4,424.28

Finding the Fourth Proportional to 8,320.76, 12,477.48 and 4,424.28

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Solution

The fourth proportional to 8,320.76, 12,477.48 and 4,424.28 is: 6,634.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.76 : 12,477.48 = 4,424.28 : x
  2. Step 2: Convert to fraction form
    8,320.76/12,477.48 = 4,424.28/x
  3. Step 3: Cross multiply
    8,320.76x = 12,477.48 × 4,424.28
  4. Step 4: Simplify right side
    8,320.76x = 55,203,865.21
  5. Step 5: Solve for x
    x = 55,203,865.21/8,320.76
  6. Step 6: Final answer
    x = 6,634.47

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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.