Home / 1,420.46-2,119.27-1,264.52

Finding the Fourth Proportional to 1,420.46, 2,119.27 and 1,264.52

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Solution

The fourth proportional to 1,420.46, 2,119.27 and 1,264.52 is: 1,886.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420.46 : 2,119.27 = 1,264.52 : x
  2. Step 2: Convert to fraction form
    1,420.46/2,119.27 = 1,264.52/x
  3. Step 3: Cross multiply
    1,420.46x = 2,119.27 × 1,264.52
  4. Step 4: Simplify right side
    1,420.46x = 2,679,859.30
  5. Step 5: Solve for x
    x = 2,679,859.30/1,420.46
  6. Step 6: Final answer
    x = 1,886.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.