Home / 3,465.45-4,782.58-2,139.21

Finding the Fourth Proportional to 3,465.45, 4,782.58 and 2,139.21

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Solution

The fourth proportional to 3,465.45, 4,782.58 and 2,139.21 is: 2,952.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,465.45 : 4,782.58 = 2,139.21 : x
  2. Step 2: Convert to fraction form
    3,465.45/4,782.58 = 2,139.21/x
  3. Step 3: Cross multiply
    3,465.45x = 4,782.58 × 2,139.21
  4. Step 4: Simplify right side
    3,465.45x = 10,230,937.61
  5. Step 5: Solve for x
    x = 10,230,937.61/3,465.45
  6. Step 6: Final answer
    x = 2,952.27

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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.