Home / 1,210.96-1,817.10-480.56

Finding the Fourth Proportional to 1,210.96, 1,817.10 and 480.56

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Solution

The fourth proportional to 1,210.96, 1,817.10 and 480.56 is: 721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.96 : 1,817.10 = 480.56 : x
  2. Step 2: Convert to fraction form
    1,210.96/1,817.10 = 480.56/x
  3. Step 3: Cross multiply
    1,210.96x = 1,817.10 × 480.56
  4. Step 4: Simplify right side
    1,210.96x = 873,225.58
  5. Step 5: Solve for x
    x = 873,225.58/1,210.96
  6. Step 6: Final answer
    x = 721.10

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Double scale
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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.