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Finding the Fourth Proportional to 7,807.88, 10,775.08 and 4,665.90

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Solution

The fourth proportional to 7,807.88, 10,775.08 and 4,665.90 is: 6,439.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,807.88 : 10,775.08 = 4,665.90 : x
  2. Step 2: Convert to fraction form
    7,807.88/10,775.08 = 4,665.90/x
  3. Step 3: Cross multiply
    7,807.88x = 10,775.08 × 4,665.90
  4. Step 4: Simplify right side
    7,807.88x = 50,275,445.77
  5. Step 5: Solve for x
    x = 50,275,445.77/7,807.88
  6. Step 6: Final answer
    x = 6,439.06

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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.