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Finding the Fourth Proportional to 7,007.80, 10,501.84 and 3,889.24

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Solution

The fourth proportional to 7,007.80, 10,501.84 and 3,889.24 is: 5,828.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,007.80 : 10,501.84 = 3,889.24 : x
  2. Step 2: Convert to fraction form
    7,007.80/10,501.84 = 3,889.24/x
  3. Step 3: Cross multiply
    7,007.80x = 10,501.84 × 3,889.24
  4. Step 4: Simplify right side
    7,007.80x = 40,844,176.20
  5. Step 5: Solve for x
    x = 40,844,176.20/7,007.80
  6. Step 6: Final answer
    x = 5,828.39

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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.