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Finding the Fourth Proportional to 8,957.54, 12,362.16 and 4,979.42

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Solution

The fourth proportional to 8,957.54, 12,362.16 and 4,979.42 is: 6,872.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,957.54 : 12,362.16 = 4,979.42 : x
  2. Step 2: Convert to fraction form
    8,957.54/12,362.16 = 4,979.42/x
  3. Step 3: Cross multiply
    8,957.54x = 12,362.16 × 4,979.42
  4. Step 4: Simplify right side
    8,957.54x = 61,556,386.75
  5. Step 5: Solve for x
    x = 61,556,386.75/8,957.54
  6. Step 6: Final answer
    x = 6,872.02

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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.