Home / 2,483.11-3,426.85-1,421.20

Finding the Fourth Proportional to 2,483.11, 3,426.85 and 1,421.20

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Solution

The fourth proportional to 2,483.11, 3,426.85 and 1,421.20 is: 1,961.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,483.11 : 3,426.85 = 1,421.20 : x
  2. Step 2: Convert to fraction form
    2,483.11/3,426.85 = 1,421.20/x
  3. Step 3: Cross multiply
    2,483.11x = 3,426.85 × 1,421.20
  4. Step 4: Simplify right side
    2,483.11x = 4,870,239.22
  5. Step 5: Solve for x
    x = 4,870,239.22/2,483.11
  6. Step 6: Final answer
    x = 1,961.35

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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.