Home / 3,465.40-4,782.10-2,139.23

Finding the Fourth Proportional to 3,465.40, 4,782.10 and 2,139.23

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Solution

The fourth proportional to 3,465.40, 4,782.10 and 2,139.23 is: 2,952.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,465.40 : 4,782.10 = 2,139.23 : x
  2. Step 2: Convert to fraction form
    3,465.40/4,782.10 = 2,139.23/x
  3. Step 3: Cross multiply
    3,465.40x = 4,782.10 × 2,139.23
  4. Step 4: Simplify right side
    3,465.40x = 10,230,011.78
  5. Step 5: Solve for x
    x = 10,230,011.78/3,465.40
  6. Step 6: Final answer
    x = 2,952.04

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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.