Home / 2,309.46-3,187.08-1,261.59

Finding the Fourth Proportional to 2,309.46, 3,187.08 and 1,261.59

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Solution

The fourth proportional to 2,309.46, 3,187.08 and 1,261.59 is: 1,741.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.46 : 3,187.08 = 1,261.59 : x
  2. Step 2: Convert to fraction form
    2,309.46/3,187.08 = 1,261.59/x
  3. Step 3: Cross multiply
    2,309.46x = 3,187.08 × 1,261.59
  4. Step 4: Simplify right side
    2,309.46x = 4,020,788.26
  5. Step 5: Solve for x
    x = 4,020,788.26/2,309.46
  6. Step 6: Final answer
    x = 1,741.01

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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.