Home / 1,118.37-1,543.36-621.04

Finding the Fourth Proportional to 1,118.37, 1,543.36 and 621.04

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Solution

The fourth proportional to 1,118.37, 1,543.36 and 621.04 is: 857.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.37 : 1,543.36 = 621.04 : x
  2. Step 2: Convert to fraction form
    1,118.37/1,543.36 = 621.04/x
  3. Step 3: Cross multiply
    1,118.37x = 1,543.36 × 621.04
  4. Step 4: Simplify right side
    1,118.37x = 958,480.58
  5. Step 5: Solve for x
    x = 958,480.58/1,118.37
  6. Step 6: Final answer
    x = 857.04

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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.