Home / 2,191.98-3,026.99-1,407.40

Finding the Fourth Proportional to 2,191.98, 3,026.99 and 1,407.40

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Solution

The fourth proportional to 2,191.98, 3,026.99 and 1,407.40 is: 1,943.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.98 : 3,026.99 = 1,407.40 : x
  2. Step 2: Convert to fraction form
    2,191.98/3,026.99 = 1,407.40/x
  3. Step 3: Cross multiply
    2,191.98x = 3,026.99 × 1,407.40
  4. Step 4: Simplify right side
    2,191.98x = 4,260,185.73
  5. Step 5: Solve for x
    x = 4,260,185.73/2,191.98
  6. Step 6: Final answer
    x = 1,943.53

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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.