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Finding the Fourth Proportional to 2,888.92, 3,985.52 and 2,216.85

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Solution

The fourth proportional to 2,888.92, 3,985.52 and 2,216.85 is: 3,058.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.92 : 3,985.52 = 2,216.85 : x
  2. Step 2: Convert to fraction form
    2,888.92/3,985.52 = 2,216.85/x
  3. Step 3: Cross multiply
    2,888.92x = 3,985.52 × 2,216.85
  4. Step 4: Simplify right side
    2,888.92x = 8,835,300.01
  5. Step 5: Solve for x
    x = 8,835,300.01/2,888.92
  6. Step 6: Final answer
    x = 3,058.34

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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.