Home / 3,132.43-4,320.86-2,070.21

Finding the Fourth Proportional to 3,132.43, 4,320.86 and 2,070.21

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Solution

The fourth proportional to 3,132.43, 4,320.86 and 2,070.21 is: 2,855.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,132.43 : 4,320.86 = 2,070.21 : x
  2. Step 2: Convert to fraction form
    3,132.43/4,320.86 = 2,070.21/x
  3. Step 3: Cross multiply
    3,132.43x = 4,320.86 × 2,070.21
  4. Step 4: Simplify right side
    3,132.43x = 8,945,055.63
  5. Step 5: Solve for x
    x = 8,945,055.63/3,132.43
  6. Step 6: Final answer
    x = 2,855.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.