Home / 1,985.85-2,738.21-1,424.52

Finding the Fourth Proportional to 1,985.85, 2,738.21 and 1,424.52

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Solution

The fourth proportional to 1,985.85, 2,738.21 and 1,424.52 is: 1,964.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.85 : 2,738.21 = 1,424.52 : x
  2. Step 2: Convert to fraction form
    1,985.85/2,738.21 = 1,424.52/x
  3. Step 3: Cross multiply
    1,985.85x = 2,738.21 × 1,424.52
  4. Step 4: Simplify right side
    1,985.85x = 3,900,627.79
  5. Step 5: Solve for x
    x = 3,900,627.79/1,985.85
  6. Step 6: Final answer
    x = 1,964.21

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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.