Home / 2,051.28-2,830.80-1,119.78

Finding the Fourth Proportional to 2,051.28, 2,830.80 and 1,119.78

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Solution

The fourth proportional to 2,051.28, 2,830.80 and 1,119.78 is: 1,545.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,051.28 : 2,830.80 = 1,119.78 : x
  2. Step 2: Convert to fraction form
    2,051.28/2,830.80 = 1,119.78/x
  3. Step 3: Cross multiply
    2,051.28x = 2,830.80 × 1,119.78
  4. Step 4: Simplify right side
    2,051.28x = 3,169,873.22
  5. Step 5: Solve for x
    x = 3,169,873.22/2,051.28
  6. Step 6: Final answer
    x = 1,545.31

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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.