Home / 3,106.20-4,656.84-2,129.40

Finding the Fourth Proportional to 3,106.20, 4,656.84 and 2,129.40

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Solution

The fourth proportional to 3,106.20, 4,656.84 and 2,129.40 is: 3,192.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.20 : 4,656.84 = 2,129.40 : x
  2. Step 2: Convert to fraction form
    3,106.20/4,656.84 = 2,129.40/x
  3. Step 3: Cross multiply
    3,106.20x = 4,656.84 × 2,129.40
  4. Step 4: Simplify right side
    3,106.20x = 9,916,275.10
  5. Step 5: Solve for x
    x = 9,916,275.10/3,106.20
  6. Step 6: Final answer
    x = 3,192.41

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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.