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Finding the Fourth Proportional to 7,859.69, 10,847.28 and 4,715.88

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Solution

The fourth proportional to 7,859.69, 10,847.28 and 4,715.88 is: 6,508.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,859.69 : 10,847.28 = 4,715.88 : x
  2. Step 2: Convert to fraction form
    7,859.69/10,847.28 = 4,715.88/x
  3. Step 3: Cross multiply
    7,859.69x = 10,847.28 × 4,715.88
  4. Step 4: Simplify right side
    7,859.69x = 51,154,470.81
  5. Step 5: Solve for x
    x = 51,154,470.81/7,859.69
  6. Step 6: Final answer
    x = 6,508.46

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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.