Home / 2,989.91-4,125.94-1,810.96

Finding the Fourth Proportional to 2,989.91, 4,125.94 and 1,810.96

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Solution

The fourth proportional to 2,989.91, 4,125.94 and 1,810.96 is: 2,499.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.91 : 4,125.94 = 1,810.96 : x
  2. Step 2: Convert to fraction form
    2,989.91/4,125.94 = 1,810.96/x
  3. Step 3: Cross multiply
    2,989.91x = 4,125.94 × 1,810.96
  4. Step 4: Simplify right side
    2,989.91x = 7,471,897.46
  5. Step 5: Solve for x
    x = 7,471,897.46/2,989.91
  6. Step 6: Final answer
    x = 2,499.04

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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.