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Finding the Fourth Proportional to 3,158.99, 4,360.80 and 1,900.25

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Solution

The fourth proportional to 3,158.99, 4,360.80 and 1,900.25 is: 2,623.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.99 : 4,360.80 = 1,900.25 : x
  2. Step 2: Convert to fraction form
    3,158.99/4,360.80 = 1,900.25/x
  3. Step 3: Cross multiply
    3,158.99x = 4,360.80 × 1,900.25
  4. Step 4: Simplify right side
    3,158.99x = 8,286,610.20
  5. Step 5: Solve for x
    x = 8,286,610.20/3,158.99
  6. Step 6: Final answer
    x = 2,623.18

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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.