Home / 5,215.95-7,197.66-2,977.92

Finding the Fourth Proportional to 5,215.95, 7,197.66 and 2,977.92

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Solution

The fourth proportional to 5,215.95, 7,197.66 and 2,977.92 is: 4,109.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.95 : 7,197.66 = 2,977.92 : x
  2. Step 2: Convert to fraction form
    5,215.95/7,197.66 = 2,977.92/x
  3. Step 3: Cross multiply
    5,215.95x = 7,197.66 × 2,977.92
  4. Step 4: Simplify right side
    5,215.95x = 21,434,055.67
  5. Step 5: Solve for x
    x = 21,434,055.67/5,215.95
  6. Step 6: Final answer
    x = 4,109.33

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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.