Home / 2,031.90-2,803.80-1,147.50

Finding the Fourth Proportional to 2,031.90, 2,803.80 and 1,147.50

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Solution

The fourth proportional to 2,031.90, 2,803.80 and 1,147.50 is: 1,583.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,031.90 : 2,803.80 = 1,147.50 : x
  2. Step 2: Convert to fraction form
    2,031.90/2,803.80 = 1,147.50/x
  3. Step 3: Cross multiply
    2,031.90x = 2,803.80 × 1,147.50
  4. Step 4: Simplify right side
    2,031.90x = 3,217,360.50
  5. Step 5: Solve for x
    x = 3,217,360.50/2,031.90
  6. Step 6: Final answer
    x = 1,583.42

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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.