Home / 1,268.80-1,753.16-976.59

Finding the Fourth Proportional to 1,268.80, 1,753.16 and 976.59

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Solution

The fourth proportional to 1,268.80, 1,753.16 and 976.59 is: 1,349.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.80 : 1,753.16 = 976.59 : x
  2. Step 2: Convert to fraction form
    1,268.80/1,753.16 = 976.59/x
  3. Step 3: Cross multiply
    1,268.80x = 1,753.16 × 976.59
  4. Step 4: Simplify right side
    1,268.80x = 1,712,113.64
  5. Step 5: Solve for x
    x = 1,712,113.64/1,268.80
  6. Step 6: Final answer
    x = 1,349.40

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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.