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Finding the Fourth Proportional to 7,807.39, 10,775.24 and 5,020.99

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Solution

The fourth proportional to 7,807.39, 10,775.24 and 5,020.99 is: 6,929.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,807.39 : 10,775.24 = 5,020.99 : x
  2. Step 2: Convert to fraction form
    7,807.39/10,775.24 = 5,020.99/x
  3. Step 3: Cross multiply
    7,807.39x = 10,775.24 × 5,020.99
  4. Step 4: Simplify right side
    7,807.39x = 54,102,372.29
  5. Step 5: Solve for x
    x = 54,102,372.29/7,807.39
  6. Step 6: Final answer
    x = 6,929.64

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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.