Home / 1,539.95-2,126.15-1,185.24

Finding the Fourth Proportional to 1,539.95, 2,126.15 and 1,185.24

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Solution

The fourth proportional to 1,539.95, 2,126.15 and 1,185.24 is: 1,636.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.95 : 2,126.15 = 1,185.24 : x
  2. Step 2: Convert to fraction form
    1,539.95/2,126.15 = 1,185.24/x
  3. Step 3: Cross multiply
    1,539.95x = 2,126.15 × 1,185.24
  4. Step 4: Simplify right side
    1,539.95x = 2,519,992.10
  5. Step 5: Solve for x
    x = 2,519,992.10/1,539.95
  6. Step 6: Final answer
    x = 1,636.42

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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.