Home / 3,885.80-5,362.48-2,117.52

Finding the Fourth Proportional to 3,885.80, 5,362.48 and 2,117.52

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Solution

The fourth proportional to 3,885.80, 5,362.48 and 2,117.52 is: 2,922.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.80 : 5,362.48 = 2,117.52 : x
  2. Step 2: Convert to fraction form
    3,885.80/5,362.48 = 2,117.52/x
  3. Step 3: Cross multiply
    3,885.80x = 5,362.48 × 2,117.52
  4. Step 4: Simplify right side
    3,885.80x = 11,355,158.65
  5. Step 5: Solve for x
    x = 11,355,158.65/3,885.80
  6. Step 6: Final answer
    x = 2,922.22

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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.