Home / 2,887.92-3,985.05-1,628.83

Finding the Fourth Proportional to 2,887.92, 3,985.05 and 1,628.83

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Solution

The fourth proportional to 2,887.92, 3,985.05 and 1,628.83 is: 2,247.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.92 : 3,985.05 = 1,628.83 : x
  2. Step 2: Convert to fraction form
    2,887.92/3,985.05 = 1,628.83/x
  3. Step 3: Cross multiply
    2,887.92x = 3,985.05 × 1,628.83
  4. Step 4: Simplify right side
    2,887.92x = 6,490,948.50
  5. Step 5: Solve for x
    x = 6,490,948.50/2,887.92
  6. Step 6: Final answer
    x = 2,247.62

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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.