Home / 1,821.10-2,512.74-1,122.34

Finding the Fourth Proportional to 1,821.10, 2,512.74 and 1,122.34

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Solution

The fourth proportional to 1,821.10, 2,512.74 and 1,122.34 is: 1,548.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.10 : 2,512.74 = 1,122.34 : x
  2. Step 2: Convert to fraction form
    1,821.10/2,512.74 = 1,122.34/x
  3. Step 3: Cross multiply
    1,821.10x = 2,512.74 × 1,122.34
  4. Step 4: Simplify right side
    1,821.10x = 2,820,148.61
  5. Step 5: Solve for x
    x = 2,820,148.61/1,821.10
  6. Step 6: Final answer
    x = 1,548.60

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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.