Home / 2,108.13-3,158.28-1,412.75

Finding the Fourth Proportional to 2,108.13, 3,158.28 and 1,412.75

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Solution

The fourth proportional to 2,108.13, 3,158.28 and 1,412.75 is: 2,116.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.13 : 3,158.28 = 1,412.75 : x
  2. Step 2: Convert to fraction form
    2,108.13/3,158.28 = 1,412.75/x
  3. Step 3: Cross multiply
    2,108.13x = 3,158.28 × 1,412.75
  4. Step 4: Simplify right side
    2,108.13x = 4,461,860.07
  5. Step 5: Solve for x
    x = 4,461,860.07/2,108.13
  6. Step 6: Final answer
    x = 2,116.50

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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.