Home / 6,897.20-10,345.80-3,611.30

Finding the Fourth Proportional to 6,897.20, 10,345.80 and 3,611.30

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Solution

The fourth proportional to 6,897.20, 10,345.80 and 3,611.30 is: 5,416.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,897.20 : 10,345.80 = 3,611.30 : x
  2. Step 2: Convert to fraction form
    6,897.20/10,345.80 = 3,611.30/x
  3. Step 3: Cross multiply
    6,897.20x = 10,345.80 × 3,611.30
  4. Step 4: Simplify right side
    6,897.20x = 37,361,787.54
  5. Step 5: Solve for x
    x = 37,361,787.54/6,897.20
  6. Step 6: Final answer
    x = 5,416.95

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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.