Home / 2,091.18-2,885.97-1,207.05

Finding the Fourth Proportional to 2,091.18, 2,885.97 and 1,207.05

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Solution

The fourth proportional to 2,091.18, 2,885.97 and 1,207.05 is: 1,665.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.18 : 2,885.97 = 1,207.05 : x
  2. Step 2: Convert to fraction form
    2,091.18/2,885.97 = 1,207.05/x
  3. Step 3: Cross multiply
    2,091.18x = 2,885.97 × 1,207.05
  4. Step 4: Simplify right side
    2,091.18x = 3,483,503.79
  5. Step 5: Solve for x
    x = 3,483,503.79/2,091.18
  6. Step 6: Final answer
    x = 1,665.80

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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.