Home / 1,775.76-2,451.40-1,179.20

Finding the Fourth Proportional to 1,775.76, 2,451.40 and 1,179.20

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Solution

The fourth proportional to 1,775.76, 2,451.40 and 1,179.20 is: 1,627.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.76 : 2,451.40 = 1,179.20 : x
  2. Step 2: Convert to fraction form
    1,775.76/2,451.40 = 1,179.20/x
  3. Step 3: Cross multiply
    1,775.76x = 2,451.40 × 1,179.20
  4. Step 4: Simplify right side
    1,775.76x = 2,890,690.88
  5. Step 5: Solve for x
    x = 2,890,690.88/1,775.76
  6. Step 6: Final answer
    x = 1,627.86

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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.