Home / 4,287.36-6,429.12-2,989.44

Finding the Fourth Proportional to 4,287.36, 6,429.12 and 2,989.44

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Solution

The fourth proportional to 4,287.36, 6,429.12 and 2,989.44 is: 4,482.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,287.36 : 6,429.12 = 2,989.44 : x
  2. Step 2: Convert to fraction form
    4,287.36/6,429.12 = 2,989.44/x
  3. Step 3: Cross multiply
    4,287.36x = 6,429.12 × 2,989.44
  4. Step 4: Simplify right side
    4,287.36x = 19,219,468.49
  5. Step 5: Solve for x
    x = 19,219,468.49/4,287.36
  6. Step 6: Final answer
    x = 4,482.82

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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.