Home / 3,121.14-4,677.09-1,657.20

Finding the Fourth Proportional to 3,121.14, 4,677.09 and 1,657.20

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Solution

The fourth proportional to 3,121.14, 4,677.09 and 1,657.20 is: 2,483.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.14 : 4,677.09 = 1,657.20 : x
  2. Step 2: Convert to fraction form
    3,121.14/4,677.09 = 1,657.20/x
  3. Step 3: Cross multiply
    3,121.14x = 4,677.09 × 1,657.20
  4. Step 4: Simplify right side
    3,121.14x = 7,750,873.55
  5. Step 5: Solve for x
    x = 7,750,873.55/3,121.14
  6. Step 6: Final answer
    x = 2,483.35

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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.