Home / 2,172.15-2,998.85-1,427.42

Finding the Fourth Proportional to 2,172.15, 2,998.85 and 1,427.42

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Solution

The fourth proportional to 2,172.15, 2,998.85 and 1,427.42 is: 1,970.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.15 : 2,998.85 = 1,427.42 : x
  2. Step 2: Convert to fraction form
    2,172.15/2,998.85 = 1,427.42/x
  3. Step 3: Cross multiply
    2,172.15x = 2,998.85 × 1,427.42
  4. Step 4: Simplify right side
    2,172.15x = 4,280,596.34
  5. Step 5: Solve for x
    x = 4,280,596.34/2,172.15
  6. Step 6: Final answer
    x = 1,970.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.