Home / 5,638.22-7,780.46-3,085.92

Finding the Fourth Proportional to 5,638.22, 7,780.46 and 3,085.92

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Solution

The fourth proportional to 5,638.22, 7,780.46 and 3,085.92 is: 4,258.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.22 : 7,780.46 = 3,085.92 : x
  2. Step 2: Convert to fraction form
    5,638.22/7,780.46 = 3,085.92/x
  3. Step 3: Cross multiply
    5,638.22x = 7,780.46 × 3,085.92
  4. Step 4: Simplify right side
    5,638.22x = 24,009,877.12
  5. Step 5: Solve for x
    x = 24,009,877.12/5,638.22
  6. Step 6: Final answer
    x = 4,258.41

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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.