Home / 8,921.21-12,310.38-4,941.58

Finding the Fourth Proportional to 8,921.21, 12,310.38 and 4,941.58

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Solution

The fourth proportional to 8,921.21, 12,310.38 and 4,941.58 is: 6,818.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.21 : 12,310.38 = 4,941.58 : x
  2. Step 2: Convert to fraction form
    8,921.21/12,310.38 = 4,941.58/x
  3. Step 3: Cross multiply
    8,921.21x = 12,310.38 × 4,941.58
  4. Step 4: Simplify right side
    8,921.21x = 60,832,746.02
  5. Step 5: Solve for x
    x = 60,832,746.02/8,921.21
  6. Step 6: Final answer
    x = 6,818.89

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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.