Home / 2,439.86-3,366.98-1,320.77

Finding the Fourth Proportional to 2,439.86, 3,366.98 and 1,320.77

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Solution

The fourth proportional to 2,439.86, 3,366.98 and 1,320.77 is: 1,822.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.86 : 3,366.98 = 1,320.77 : x
  2. Step 2: Convert to fraction form
    2,439.86/3,366.98 = 1,320.77/x
  3. Step 3: Cross multiply
    2,439.86x = 3,366.98 × 1,320.77
  4. Step 4: Simplify right side
    2,439.86x = 4,446,992.08
  5. Step 5: Solve for x
    x = 4,446,992.08/2,439.86
  6. Step 6: Final answer
    x = 1,822.64

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Double scale
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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.