Home / 1,484.25-2,048.31-821.04

Finding the Fourth Proportional to 1,484.25, 2,048.31 and 821.04

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Solution

The fourth proportional to 1,484.25, 2,048.31 and 821.04 is: 1,133.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,484.25 : 2,048.31 = 821.04 : x
  2. Step 2: Convert to fraction form
    1,484.25/2,048.31 = 821.04/x
  3. Step 3: Cross multiply
    1,484.25x = 2,048.31 × 821.04
  4. Step 4: Simplify right side
    1,484.25x = 1,681,744.44
  5. Step 5: Solve for x
    x = 1,681,744.44/1,484.25
  6. Step 6: Final answer
    x = 1,133.06

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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.