Home / 1,775.70-2,451.36-1,217.19

Finding the Fourth Proportional to 1,775.70, 2,451.36 and 1,217.19

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Solution

The fourth proportional to 1,775.70, 2,451.36 and 1,217.19 is: 1,680.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.70 : 2,451.36 = 1,217.19 : x
  2. Step 2: Convert to fraction form
    1,775.70/2,451.36 = 1,217.19/x
  3. Step 3: Cross multiply
    1,775.70x = 2,451.36 × 1,217.19
  4. Step 4: Simplify right side
    1,775.70x = 2,983,770.88
  5. Step 5: Solve for x
    x = 2,983,770.88/1,775.70
  6. Step 6: Final answer
    x = 1,680.34

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Half scale
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Double scale
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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.