Home / 3,018.40-4,165.56-1,898.92

Finding the Fourth Proportional to 3,018.40, 4,165.56 and 1,898.92

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Solution

The fourth proportional to 3,018.40, 4,165.56 and 1,898.92 is: 2,620.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018.40 : 4,165.56 = 1,898.92 : x
  2. Step 2: Convert to fraction form
    3,018.40/4,165.56 = 1,898.92/x
  3. Step 3: Cross multiply
    3,018.40x = 4,165.56 × 1,898.92
  4. Step 4: Simplify right side
    3,018.40x = 7,910,065.20
  5. Step 5: Solve for x
    x = 7,910,065.20/3,018.40
  6. Step 6: Final answer
    x = 2,620.62

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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.