Home / 1,921.42-2,882.13-1,055.26

Finding the Fourth Proportional to 1,921.42, 2,882.13 and 1,055.26

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Solution

The fourth proportional to 1,921.42, 2,882.13 and 1,055.26 is: 1,582.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.42 : 2,882.13 = 1,055.26 : x
  2. Step 2: Convert to fraction form
    1,921.42/2,882.13 = 1,055.26/x
  3. Step 3: Cross multiply
    1,921.42x = 2,882.13 × 1,055.26
  4. Step 4: Simplify right side
    1,921.42x = 3,041,396.50
  5. Step 5: Solve for x
    x = 3,041,396.50/1,921.42
  6. Step 6: Final answer
    x = 1,582.89

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Double scale
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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.