Home / 8,077.12-11,147.16-4,721.56

Finding the Fourth Proportional to 8,077.12, 11,147.16 and 4,721.56

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Solution

The fourth proportional to 8,077.12, 11,147.16 and 4,721.56 is: 6,516.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,077.12 : 11,147.16 = 4,721.56 : x
  2. Step 2: Convert to fraction form
    8,077.12/11,147.16 = 4,721.56/x
  3. Step 3: Cross multiply
    8,077.12x = 11,147.16 × 4,721.56
  4. Step 4: Simplify right side
    8,077.12x = 52,631,984.77
  5. Step 5: Solve for x
    x = 52,631,984.77/8,077.12
  6. Step 6: Final answer
    x = 6,516.18

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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.