Home / 3,560.50-5,340.84-1,220.49

Finding the Fourth Proportional to 3,560.50, 5,340.84 and 1,220.49

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Solution

The fourth proportional to 3,560.50, 5,340.84 and 1,220.49 is: 1,830.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,560.50 : 5,340.84 = 1,220.49 : x
  2. Step 2: Convert to fraction form
    3,560.50/5,340.84 = 1,220.49/x
  3. Step 3: Cross multiply
    3,560.50x = 5,340.84 × 1,220.49
  4. Step 4: Simplify right side
    3,560.50x = 6,518,439.22
  5. Step 5: Solve for x
    x = 6,518,439.22/3,560.50
  6. Step 6: Final answer
    x = 1,830.76

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Half scale
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Double scale
Find fourth proportional to 3,561.50, 5,342.34 and 1,221.49
Similar ratio
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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.