Home / 3,465.72-4,782.87-2,140.20

Finding the Fourth Proportional to 3,465.72, 4,782.87 and 2,140.20

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Solution

The fourth proportional to 3,465.72, 4,782.87 and 2,140.20 is: 2,953.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,465.72 : 4,782.87 = 2,140.20 : x
  2. Step 2: Convert to fraction form
    3,465.72/4,782.87 = 2,140.20/x
  3. Step 3: Cross multiply
    3,465.72x = 4,782.87 × 2,140.20
  4. Step 4: Simplify right side
    3,465.72x = 10,236,298.37
  5. Step 5: Solve for x
    x = 10,236,298.37/3,465.72
  6. Step 6: Final answer
    x = 2,953.58

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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.