Home / 1,985.53-2,740.31-1,146.07

Finding the Fourth Proportional to 1,985.53, 2,740.31 and 1,146.07

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Solution

The fourth proportional to 1,985.53, 2,740.31 and 1,146.07 is: 1,581.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.53 : 2,740.31 = 1,146.07 : x
  2. Step 2: Convert to fraction form
    1,985.53/2,740.31 = 1,146.07/x
  3. Step 3: Cross multiply
    1,985.53x = 2,740.31 × 1,146.07
  4. Step 4: Simplify right side
    1,985.53x = 3,140,580.11
  5. Step 5: Solve for x
    x = 3,140,580.11/1,985.53
  6. Step 6: Final answer
    x = 1,581.73

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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.