Home / 2,439.45-3,366.44-1,320.39

Finding the Fourth Proportional to 2,439.45, 3,366.44 and 1,320.39

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Solution

The fourth proportional to 2,439.45, 3,366.44 and 1,320.39 is: 1,822.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.45 : 3,366.44 = 1,320.39 : x
  2. Step 2: Convert to fraction form
    2,439.45/3,366.44 = 1,320.39/x
  3. Step 3: Cross multiply
    2,439.45x = 3,366.44 × 1,320.39
  4. Step 4: Simplify right side
    2,439.45x = 4,445,013.71
  5. Step 5: Solve for x
    x = 4,445,013.71/2,439.45
  6. Step 6: Final answer
    x = 1,822.14

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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.