Home / 4,678.71-7,018.12-1,215.96

Finding the Fourth Proportional to 4,678.71, 7,018.12 and 1,215.96

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Solution

The fourth proportional to 4,678.71, 7,018.12 and 1,215.96 is: 1,823.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.71 : 7,018.12 = 1,215.96 : x
  2. Step 2: Convert to fraction form
    4,678.71/7,018.12 = 1,215.96/x
  3. Step 3: Cross multiply
    4,678.71x = 7,018.12 × 1,215.96
  4. Step 4: Simplify right side
    4,678.71x = 8,533,764.45
  5. Step 5: Solve for x
    x = 8,533,764.45/4,678.71
  6. Step 6: Final answer
    x = 1,823.96

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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.