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Finding the Fourth Proportional to 4,979.34, 7,472.84 and 1,861.65

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Solution

The fourth proportional to 4,979.34, 7,472.84 and 1,861.65 is: 2,793.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.34 : 7,472.84 = 1,861.65 : x
  2. Step 2: Convert to fraction form
    4,979.34/7,472.84 = 1,861.65/x
  3. Step 3: Cross multiply
    4,979.34x = 7,472.84 × 1,861.65
  4. Step 4: Simplify right side
    4,979.34x = 13,911,803.28
  5. Step 5: Solve for x
    x = 13,911,803.28/4,979.34
  6. Step 6: Final answer
    x = 2,793.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.