Home / 1,985.87-2,740.46-1,101.62

Finding the Fourth Proportional to 1,985.87, 2,740.46 and 1,101.62

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Solution

The fourth proportional to 1,985.87, 2,740.46 and 1,101.62 is: 1,520.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.87 : 2,740.46 = 1,101.62 : x
  2. Step 2: Convert to fraction form
    1,985.87/2,740.46 = 1,101.62/x
  3. Step 3: Cross multiply
    1,985.87x = 2,740.46 × 1,101.62
  4. Step 4: Simplify right side
    1,985.87x = 3,018,926.33
  5. Step 5: Solve for x
    x = 3,018,926.33/1,985.87
  6. Step 6: Final answer
    x = 1,520.21

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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.