Home / 1,816.98-2,504.76-1,284.21

Finding the Fourth Proportional to 1,816.98, 2,504.76 and 1,284.21

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Solution

The fourth proportional to 1,816.98, 2,504.76 and 1,284.21 is: 1,770.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.98 : 2,504.76 = 1,284.21 : x
  2. Step 2: Convert to fraction form
    1,816.98/2,504.76 = 1,284.21/x
  3. Step 3: Cross multiply
    1,816.98x = 2,504.76 × 1,284.21
  4. Step 4: Simplify right side
    1,816.98x = 3,216,637.84
  5. Step 5: Solve for x
    x = 3,216,637.84/1,816.98
  6. Step 6: Final answer
    x = 1,770.32

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Half scale
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Double scale
Find fourth proportional to 1,817.98, 2,506.14 and 1,285.21
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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.