Home / 2,153.70-3,230.55-1,808.10

Finding the Fourth Proportional to 2,153.70, 3,230.55 and 1,808.10

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Solution

The fourth proportional to 2,153.70, 3,230.55 and 1,808.10 is: 2,712.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.70 : 3,230.55 = 1,808.10 : x
  2. Step 2: Convert to fraction form
    2,153.70/3,230.55 = 1,808.10/x
  3. Step 3: Cross multiply
    2,153.70x = 3,230.55 × 1,808.10
  4. Step 4: Simplify right side
    2,153.70x = 5,841,157.46
  5. Step 5: Solve for x
    x = 5,841,157.46/2,153.70
  6. Step 6: Final answer
    x = 2,712.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.