Home / 2,309.04-3,186.50-1,261.12

Finding the Fourth Proportional to 2,309.04, 3,186.50 and 1,261.12

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Solution

The fourth proportional to 2,309.04, 3,186.50 and 1,261.12 is: 1,740.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.04 : 3,186.50 = 1,261.12 : x
  2. Step 2: Convert to fraction form
    2,309.04/3,186.50 = 1,261.12/x
  3. Step 3: Cross multiply
    2,309.04x = 3,186.50 × 1,261.12
  4. Step 4: Simplify right side
    2,309.04x = 4,018,558.88
  5. Step 5: Solve for x
    x = 4,018,558.88/2,309.04
  6. Step 6: Final answer
    x = 1,740.36

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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.