Home / 3,135.10-4,702.65-1,285.60

Finding the Fourth Proportional to 3,135.10, 4,702.65 and 1,285.60

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Solution

The fourth proportional to 3,135.10, 4,702.65 and 1,285.60 is: 1,928.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.10 : 4,702.65 = 1,285.60 : x
  2. Step 2: Convert to fraction form
    3,135.10/4,702.65 = 1,285.60/x
  3. Step 3: Cross multiply
    3,135.10x = 4,702.65 × 1,285.60
  4. Step 4: Simplify right side
    3,135.10x = 6,045,726.84
  5. Step 5: Solve for x
    x = 6,045,726.84/3,135.10
  6. Step 6: Final answer
    x = 1,928.40

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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.