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Finding the Fourth Proportional to 8,807.10, 13,212.90 and 5,102.70

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Solution

The fourth proportional to 8,807.10, 13,212.90 and 5,102.70 is: 7,655.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,807.10 : 13,212.90 = 5,102.70 : x
  2. Step 2: Convert to fraction form
    8,807.10/13,212.90 = 5,102.70/x
  3. Step 3: Cross multiply
    8,807.10x = 13,212.90 × 5,102.70
  4. Step 4: Simplify right side
    8,807.10x = 67,421,464.83
  5. Step 5: Solve for x
    x = 67,421,464.83/8,807.10
  6. Step 6: Final answer
    x = 7,655.35

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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.