Home / 8,130.10-12,195.15-6,161.80

Finding the Fourth Proportional to 8,130.10, 12,195.15 and 6,161.80

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Solution

The fourth proportional to 8,130.10, 12,195.15 and 6,161.80 is: 9,242.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.10 : 12,195.15 = 6,161.80 : x
  2. Step 2: Convert to fraction form
    8,130.10/12,195.15 = 6,161.80/x
  3. Step 3: Cross multiply
    8,130.10x = 12,195.15 × 6,161.80
  4. Step 4: Simplify right side
    8,130.10x = 75,144,075.27
  5. Step 5: Solve for x
    x = 75,144,075.27/8,130.10
  6. Step 6: Final answer
    x = 9,242.70

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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.