Home / 1,326.10-1,985.10-1,180.30

Finding the Fourth Proportional to 1,326.10, 1,985.10 and 1,180.30

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Solution

The fourth proportional to 1,326.10, 1,985.10 and 1,180.30 is: 1,766.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326.10 : 1,985.10 = 1,180.30 : x
  2. Step 2: Convert to fraction form
    1,326.10/1,985.10 = 1,180.30/x
  3. Step 3: Cross multiply
    1,326.10x = 1,985.10 × 1,180.30
  4. Step 4: Simplify right side
    1,326.10x = 2,343,013.53
  5. Step 5: Solve for x
    x = 2,343,013.53/1,326.10
  6. Step 6: Final answer
    x = 1,766.85

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1.5x scale

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.