Home / 1,384.10-2,074.80-1,238.30

Finding the Fourth Proportional to 1,384.10, 2,074.80 and 1,238.30

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Solution

The fourth proportional to 1,384.10, 2,074.80 and 1,238.30 is: 1,856.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384.10 : 2,074.80 = 1,238.30 : x
  2. Step 2: Convert to fraction form
    1,384.10/2,074.80 = 1,238.30/x
  3. Step 3: Cross multiply
    1,384.10x = 2,074.80 × 1,238.30
  4. Step 4: Simplify right side
    1,384.10x = 2,569,224.84
  5. Step 5: Solve for x
    x = 2,569,224.84/1,384.10
  6. Step 6: Final answer
    x = 1,856.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.