Home / 3,118.77-4,294.08-2,645.69

Finding the Fourth Proportional to 3,118.77, 4,294.08 and 2,645.69

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Solution

The fourth proportional to 3,118.77, 4,294.08 and 2,645.69 is: 3,642.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.77 : 4,294.08 = 2,645.69 : x
  2. Step 2: Convert to fraction form
    3,118.77/4,294.08 = 2,645.69/x
  3. Step 3: Cross multiply
    3,118.77x = 4,294.08 × 2,645.69
  4. Step 4: Simplify right side
    3,118.77x = 11,360,783.04
  5. Step 5: Solve for x
    x = 11,360,783.04/3,118.77
  6. Step 6: Final answer
    x = 3,642.71

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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.