Home / 3,210.10-4,815.29-1,018.78

Finding the Fourth Proportional to 3,210.10, 4,815.29 and 1,018.78

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Solution

The fourth proportional to 3,210.10, 4,815.29 and 1,018.78 is: 1,528.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.10 : 4,815.29 = 1,018.78 : x
  2. Step 2: Convert to fraction form
    3,210.10/4,815.29 = 1,018.78/x
  3. Step 3: Cross multiply
    3,210.10x = 4,815.29 × 1,018.78
  4. Step 4: Simplify right side
    3,210.10x = 4,905,721.15
  5. Step 5: Solve for x
    x = 4,905,721.15/3,210.10
  6. Step 6: Final answer
    x = 1,528.21

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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.