Home / 2,191.85-3,025.73-1,307.96

Finding the Fourth Proportional to 2,191.85, 3,025.73 and 1,307.96

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Solution

The fourth proportional to 2,191.85, 3,025.73 and 1,307.96 is: 1,805.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.85 : 3,025.73 = 1,307.96 : x
  2. Step 2: Convert to fraction form
    2,191.85/3,025.73 = 1,307.96/x
  3. Step 3: Cross multiply
    2,191.85x = 3,025.73 × 1,307.96
  4. Step 4: Simplify right side
    2,191.85x = 3,957,533.81
  5. Step 5: Solve for x
    x = 3,957,533.81/2,191.85
  6. Step 6: Final answer
    x = 1,805.57

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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.