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Finding the Fourth Proportional to 7,875.53, 11,797.10 and 5,688.65

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Solution

The fourth proportional to 7,875.53, 11,797.10 and 5,688.65 is: 8,521.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.53 : 11,797.10 = 5,688.65 : x
  2. Step 2: Convert to fraction form
    7,875.53/11,797.10 = 5,688.65/x
  3. Step 3: Cross multiply
    7,875.53x = 11,797.10 × 5,688.65
  4. Step 4: Simplify right side
    7,875.53x = 67,109,544.47
  5. Step 5: Solve for x
    x = 67,109,544.47/7,875.53
  6. Step 6: Final answer
    x = 8,521.27

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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.