Home / 3,885.90-5,362.53-2,117.51

Finding the Fourth Proportional to 3,885.90, 5,362.53 and 2,117.51

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Solution

The fourth proportional to 3,885.90, 5,362.53 and 2,117.51 is: 2,922.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.90 : 5,362.53 = 2,117.51 : x
  2. Step 2: Convert to fraction form
    3,885.90/5,362.53 = 2,117.51/x
  3. Step 3: Cross multiply
    3,885.90x = 5,362.53 × 2,117.51
  4. Step 4: Simplify right side
    3,885.90x = 11,355,207.70
  5. Step 5: Solve for x
    x = 11,355,207.70/3,885.90
  6. Step 6: Final answer
    x = 2,922.15

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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.