Home / 2,309.02-3,186.36-1,261.06

Finding the Fourth Proportional to 2,309.02, 3,186.36 and 1,261.06

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Solution

The fourth proportional to 2,309.02, 3,186.36 and 1,261.06 is: 1,740.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.02 : 3,186.36 = 1,261.06 : x
  2. Step 2: Convert to fraction form
    2,309.02/3,186.36 = 1,261.06/x
  3. Step 3: Cross multiply
    2,309.02x = 3,186.36 × 1,261.06
  4. Step 4: Simplify right side
    2,309.02x = 4,018,191.14
  5. Step 5: Solve for x
    x = 4,018,191.14/2,309.02
  6. Step 6: Final answer
    x = 1,740.21

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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.