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Finding the Fourth Proportional to 7,141.77, 9,915.01 and 6,927.93

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Solution

The fourth proportional to 7,141.77, 9,915.01 and 6,927.93 is: 9,618.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,141.77 : 9,915.01 = 6,927.93 : x
  2. Step 2: Convert to fraction form
    7,141.77/9,915.01 = 6,927.93/x
  3. Step 3: Cross multiply
    7,141.77x = 9,915.01 × 6,927.93
  4. Step 4: Simplify right side
    7,141.77x = 68,690,477.91
  5. Step 5: Solve for x
    x = 68,690,477.91/7,141.77
  6. Step 6: Final answer
    x = 9,618.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.