Home / 1,948.19-2,686.47-1,284.19

Finding the Fourth Proportional to 1,948.19, 2,686.47 and 1,284.19

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Solution

The fourth proportional to 1,948.19, 2,686.47 and 1,284.19 is: 1,770.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.19 : 2,686.47 = 1,284.19 : x
  2. Step 2: Convert to fraction form
    1,948.19/2,686.47 = 1,284.19/x
  3. Step 3: Cross multiply
    1,948.19x = 2,686.47 × 1,284.19
  4. Step 4: Simplify right side
    1,948.19x = 3,449,926.38
  5. Step 5: Solve for x
    x = 3,449,926.38/1,948.19
  6. Step 6: Final answer
    x = 1,770.84

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Half scale
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Double scale
Find fourth proportional to 1,949.19, 2,687.85 and 1,285.19
Similar ratio
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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.