Home / 2,261.64-3,120.80-1,317.59

Finding the Fourth Proportional to 2,261.64, 3,120.80 and 1,317.59

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Solution

The fourth proportional to 2,261.64, 3,120.80 and 1,317.59 is: 1,818.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.64 : 3,120.80 = 1,317.59 : x
  2. Step 2: Convert to fraction form
    2,261.64/3,120.80 = 1,317.59/x
  3. Step 3: Cross multiply
    2,261.64x = 3,120.80 × 1,317.59
  4. Step 4: Simplify right side
    2,261.64x = 4,111,924.38
  5. Step 5: Solve for x
    x = 4,111,924.38/2,261.64
  6. Step 6: Final answer
    x = 1,818.11

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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.