Home / 2,384.22-3,288.84-1,389.36

Finding the Fourth Proportional to 2,384.22, 3,288.84 and 1,389.36

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Solution

The fourth proportional to 2,384.22, 3,288.84 and 1,389.36 is: 1,916.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,384.22 : 3,288.84 = 1,389.36 : x
  2. Step 2: Convert to fraction form
    2,384.22/3,288.84 = 1,389.36/x
  3. Step 3: Cross multiply
    2,384.22x = 3,288.84 × 1,389.36
  4. Step 4: Simplify right side
    2,384.22x = 4,569,382.74
  5. Step 5: Solve for x
    x = 4,569,382.74/2,384.22
  6. Step 6: Final answer
    x = 1,916.51

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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.