Home / 1,209.09-1,810.84-1,031.47

Finding the Fourth Proportional to 1,209.09, 1,810.84 and 1,031.47

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Solution

The fourth proportional to 1,209.09, 1,810.84 and 1,031.47 is: 1,544.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209.09 : 1,810.84 = 1,031.47 : x
  2. Step 2: Convert to fraction form
    1,209.09/1,810.84 = 1,031.47/x
  3. Step 3: Cross multiply
    1,209.09x = 1,810.84 × 1,031.47
  4. Step 4: Simplify right side
    1,209.09x = 1,867,827.13
  5. Step 5: Solve for x
    x = 1,867,827.13/1,209.09
  6. Step 6: Final answer
    x = 1,544.82

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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.