Home / 2,031.80-2,803.85-1,147.64

Finding the Fourth Proportional to 2,031.80, 2,803.85 and 1,147.64

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Solution

The fourth proportional to 2,031.80, 2,803.85 and 1,147.64 is: 1,583.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,031.80 : 2,803.85 = 1,147.64 : x
  2. Step 2: Convert to fraction form
    2,031.80/2,803.85 = 1,147.64/x
  3. Step 3: Cross multiply
    2,031.80x = 2,803.85 × 1,147.64
  4. Step 4: Simplify right side
    2,031.80x = 3,217,804.68
  5. Step 5: Solve for x
    x = 3,217,804.68/2,031.80
  6. Step 6: Final answer
    x = 1,583.72

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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.