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Finding the Fourth Proportional to 6,718.56, 9,272.56 and 4,203.20

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Solution

The fourth proportional to 6,718.56, 9,272.56 and 4,203.20 is: 5,801.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,718.56 : 9,272.56 = 4,203.20 : x
  2. Step 2: Convert to fraction form
    6,718.56/9,272.56 = 4,203.20/x
  3. Step 3: Cross multiply
    6,718.56x = 9,272.56 × 4,203.20
  4. Step 4: Simplify right side
    6,718.56x = 38,974,424.19
  5. Step 5: Solve for x
    x = 38,974,424.19/6,718.56
  6. Step 6: Final answer
    x = 5,801.01

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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.