Home / 4,130.80-6,196.20-1,209.40

Finding the Fourth Proportional to 4,130.80, 6,196.20 and 1,209.40

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Solution

The fourth proportional to 4,130.80, 6,196.20 and 1,209.40 is: 1,814.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,130.80 : 6,196.20 = 1,209.40 : x
  2. Step 2: Convert to fraction form
    4,130.80/6,196.20 = 1,209.40/x
  3. Step 3: Cross multiply
    4,130.80x = 6,196.20 × 1,209.40
  4. Step 4: Simplify right side
    4,130.80x = 7,493,684.28
  5. Step 5: Solve for x
    x = 7,493,684.28/4,130.80
  6. Step 6: Final answer
    x = 1,814.10

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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.