Home / 2,911.36-4,390.84-2,859.52

Finding the Fourth Proportional to 2,911.36, 4,390.84 and 2,859.52

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Solution

The fourth proportional to 2,911.36, 4,390.84 and 2,859.52 is: 4,312.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.36 : 4,390.84 = 2,859.52 : x
  2. Step 2: Convert to fraction form
    2,911.36/4,390.84 = 2,859.52/x
  3. Step 3: Cross multiply
    2,911.36x = 4,390.84 × 2,859.52
  4. Step 4: Simplify right side
    2,911.36x = 12,555,694.80
  5. Step 5: Solve for x
    x = 12,555,694.80/2,911.36
  6. Step 6: Final answer
    x = 4,312.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.