Home / 2,114.90-3,172.35-1,018.70

Finding the Fourth Proportional to 2,114.90, 3,172.35 and 1,018.70

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Solution

The fourth proportional to 2,114.90, 3,172.35 and 1,018.70 is: 1,528.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.90 : 3,172.35 = 1,018.70 : x
  2. Step 2: Convert to fraction form
    2,114.90/3,172.35 = 1,018.70/x
  3. Step 3: Cross multiply
    2,114.90x = 3,172.35 × 1,018.70
  4. Step 4: Simplify right side
    2,114.90x = 3,231,672.95
  5. Step 5: Solve for x
    x = 3,231,672.95/2,114.90
  6. Step 6: Final answer
    x = 1,528.05

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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.