Home / 1,985.11-2,975.54-1,254.89

Finding the Fourth Proportional to 1,985.11, 2,975.54 and 1,254.89

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Solution

The fourth proportional to 1,985.11, 2,975.54 and 1,254.89 is: 1,880.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.11 : 2,975.54 = 1,254.89 : x
  2. Step 2: Convert to fraction form
    1,985.11/2,975.54 = 1,254.89/x
  3. Step 3: Cross multiply
    1,985.11x = 2,975.54 × 1,254.89
  4. Step 4: Simplify right side
    1,985.11x = 3,733,976.55
  5. Step 5: Solve for x
    x = 3,733,976.55/1,985.11
  6. Step 6: Final answer
    x = 1,880.99

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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.