Home / 3,934.81-5,430.05-2,256.25

Finding the Fourth Proportional to 3,934.81, 5,430.05 and 2,256.25

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Solution

The fourth proportional to 3,934.81, 5,430.05 and 2,256.25 is: 3,113.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.81 : 5,430.05 = 2,256.25 : x
  2. Step 2: Convert to fraction form
    3,934.81/5,430.05 = 2,256.25/x
  3. Step 3: Cross multiply
    3,934.81x = 5,430.05 × 2,256.25
  4. Step 4: Simplify right side
    3,934.81x = 12,251,511.88
  5. Step 5: Solve for x
    x = 12,251,511.88/3,934.81
  6. Step 6: Final answer
    x = 3,113.63

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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.