Home / 5,278.69-7,910.47-2,643.51

Finding the Fourth Proportional to 5,278.69, 7,910.47 and 2,643.51

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Solution

The fourth proportional to 5,278.69, 7,910.47 and 2,643.51 is: 3,961.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.69 : 7,910.47 = 2,643.51 : x
  2. Step 2: Convert to fraction form
    5,278.69/7,910.47 = 2,643.51/x
  3. Step 3: Cross multiply
    5,278.69x = 7,910.47 × 2,643.51
  4. Step 4: Simplify right side
    5,278.69x = 20,911,406.55
  5. Step 5: Solve for x
    x = 20,911,406.55/5,278.69
  6. Step 6: Final answer
    x = 3,961.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.