Home / 4,120.80-5,686.50-2,328.24

Finding the Fourth Proportional to 4,120.80, 5,686.50 and 2,328.24

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Solution

The fourth proportional to 4,120.80, 5,686.50 and 2,328.24 is: 3,212.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.80 : 5,686.50 = 2,328.24 : x
  2. Step 2: Convert to fraction form
    4,120.80/5,686.50 = 2,328.24/x
  3. Step 3: Cross multiply
    4,120.80x = 5,686.50 × 2,328.24
  4. Step 4: Simplify right side
    4,120.80x = 13,239,536.76
  5. Step 5: Solve for x
    x = 13,239,536.76/4,120.80
  6. Step 6: Final answer
    x = 3,212.86

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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.