Home / 8,075.20-12,116.40-3,690.40

Finding the Fourth Proportional to 8,075.20, 12,116.40 and 3,690.40

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Solution

The fourth proportional to 8,075.20, 12,116.40 and 3,690.40 is: 5,537.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.20 : 12,116.40 = 3,690.40 : x
  2. Step 2: Convert to fraction form
    8,075.20/12,116.40 = 3,690.40/x
  3. Step 3: Cross multiply
    8,075.20x = 12,116.40 × 3,690.40
  4. Step 4: Simplify right side
    8,075.20x = 44,714,362.56
  5. Step 5: Solve for x
    x = 44,714,362.56/8,075.20
  6. Step 6: Final answer
    x = 5,537.25

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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.