Home / 1,305.06-1,798.65-1,137.39

Finding the Fourth Proportional to 1,305.06, 1,798.65 and 1,137.39

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Solution

The fourth proportional to 1,305.06, 1,798.65 and 1,137.39 is: 1,567.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,305.06 : 1,798.65 = 1,137.39 : x
  2. Step 2: Convert to fraction form
    1,305.06/1,798.65 = 1,137.39/x
  3. Step 3: Cross multiply
    1,305.06x = 1,798.65 × 1,137.39
  4. Step 4: Simplify right side
    1,305.06x = 2,045,766.52
  5. Step 5: Solve for x
    x = 2,045,766.52/1,305.06
  6. Step 6: Final answer
    x = 1,567.57

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1.5x scale

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.