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Finding the Fourth Proportional to 7,767.53, 10,718.82 and 4,230.72

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Solution

The fourth proportional to 7,767.53, 10,718.82 and 4,230.72 is: 5,838.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,767.53 : 10,718.82 = 4,230.72 : x
  2. Step 2: Convert to fraction form
    7,767.53/10,718.82 = 4,230.72/x
  3. Step 3: Cross multiply
    7,767.53x = 10,718.82 × 4,230.72
  4. Step 4: Simplify right side
    7,767.53x = 45,348,326.15
  5. Step 5: Solve for x
    x = 45,348,326.15/7,767.53
  6. Step 6: Final answer
    x = 5,838.19

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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.