Home / 4,288.80-6,429.46-1,915.10

Finding the Fourth Proportional to 4,288.80, 6,429.46 and 1,915.10

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Solution

The fourth proportional to 4,288.80, 6,429.46 and 1,915.10 is: 2,870.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,288.80 : 6,429.46 = 1,915.10 : x
  2. Step 2: Convert to fraction form
    4,288.80/6,429.46 = 1,915.10/x
  3. Step 3: Cross multiply
    4,288.80x = 6,429.46 × 1,915.10
  4. Step 4: Simplify right side
    4,288.80x = 12,313,058.85
  5. Step 5: Solve for x
    x = 12,313,058.85/4,288.80
  6. Step 6: Final answer
    x = 2,870.98

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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.