Home / 8,121.95-11,207.16-4,935.91

Finding the Fourth Proportional to 8,121.95, 11,207.16 and 4,935.91

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Solution

The fourth proportional to 8,121.95, 11,207.16 and 4,935.91 is: 6,810.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.95 : 11,207.16 = 4,935.91 : x
  2. Step 2: Convert to fraction form
    8,121.95/11,207.16 = 4,935.91/x
  3. Step 3: Cross multiply
    8,121.95x = 11,207.16 × 4,935.91
  4. Step 4: Simplify right side
    8,121.95x = 55,317,557.63
  5. Step 5: Solve for x
    x = 55,317,557.63/8,121.95
  6. Step 6: Final answer
    x = 6,810.87

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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.