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Finding the Fourth Proportional to 8,075.10, 12,112.65 and 7,005.90

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Solution

The fourth proportional to 8,075.10, 12,112.65 and 7,005.90 is: 10,508.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.10 : 12,112.65 = 7,005.90 : x
  2. Step 2: Convert to fraction form
    8,075.10/12,112.65 = 7,005.90/x
  3. Step 3: Cross multiply
    8,075.10x = 12,112.65 × 7,005.90
  4. Step 4: Simplify right side
    8,075.10x = 84,860,014.64
  5. Step 5: Solve for x
    x = 84,860,014.64/8,075.10
  6. Step 6: Final answer
    x = 10,508.85

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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.