Home / 3,135.20-4,702.80-2,897.60

Finding the Fourth Proportional to 3,135.20, 4,702.80 and 2,897.60

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Solution

The fourth proportional to 3,135.20, 4,702.80 and 2,897.60 is: 4,346.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.20 : 4,702.80 = 2,897.60 : x
  2. Step 2: Convert to fraction form
    3,135.20/4,702.80 = 2,897.60/x
  3. Step 3: Cross multiply
    3,135.20x = 4,702.80 × 2,897.60
  4. Step 4: Simplify right side
    3,135.20x = 13,626,833.28
  5. Step 5: Solve for x
    x = 13,626,833.28/3,135.20
  6. Step 6: Final answer
    x = 4,346.40

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1.5x scale

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.