Home / 2,109.11-2,909.67-1,363.15

Finding the Fourth Proportional to 2,109.11, 2,909.67 and 1,363.15

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Solution

The fourth proportional to 2,109.11, 2,909.67 and 1,363.15 is: 1,880.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.11 : 2,909.67 = 1,363.15 : x
  2. Step 2: Convert to fraction form
    2,109.11/2,909.67 = 1,363.15/x
  3. Step 3: Cross multiply
    2,109.11x = 2,909.67 × 1,363.15
  4. Step 4: Simplify right side
    2,109.11x = 3,966,302.11
  5. Step 5: Solve for x
    x = 3,966,302.11/2,109.11
  6. Step 6: Final answer
    x = 1,880.56

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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.