Home / 2,086.20-2,878.80-1,154.70

Finding the Fourth Proportional to 2,086.20, 2,878.80 and 1,154.70

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Solution

The fourth proportional to 2,086.20, 2,878.80 and 1,154.70 is: 1,593.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,086.20 : 2,878.80 = 1,154.70 : x
  2. Step 2: Convert to fraction form
    2,086.20/2,878.80 = 1,154.70/x
  3. Step 3: Cross multiply
    2,086.20x = 2,878.80 × 1,154.70
  4. Step 4: Simplify right side
    2,086.20x = 3,324,150.36
  5. Step 5: Solve for x
    x = 3,324,150.36/2,086.20
  6. Step 6: Final answer
    x = 1,593.40

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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.