Home / 7,156.65-10,728.59-3,644.70

Finding the Fourth Proportional to 7,156.65, 10,728.59 and 3,644.70

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Solution

The fourth proportional to 7,156.65, 10,728.59 and 3,644.70 is: 5,463.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,156.65 : 10,728.59 = 3,644.70 : x
  2. Step 2: Convert to fraction form
    7,156.65/10,728.59 = 3,644.70/x
  3. Step 3: Cross multiply
    7,156.65x = 10,728.59 × 3,644.70
  4. Step 4: Simplify right side
    7,156.65x = 39,102,473.75
  5. Step 5: Solve for x
    x = 39,102,473.75/7,156.65
  6. Step 6: Final answer
    x = 5,463.80

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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.