Home / 1,308.24-1,807.62-1,261.53

Finding the Fourth Proportional to 1,308.24, 1,807.62 and 1,261.53

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Solution

The fourth proportional to 1,308.24, 1,807.62 and 1,261.53 is: 1,743.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.24 : 1,807.62 = 1,261.53 : x
  2. Step 2: Convert to fraction form
    1,308.24/1,807.62 = 1,261.53/x
  3. Step 3: Cross multiply
    1,308.24x = 1,807.62 × 1,261.53
  4. Step 4: Simplify right side
    1,308.24x = 2,280,366.86
  5. Step 5: Solve for x
    x = 2,280,366.86/1,308.24
  6. Step 6: Final answer
    x = 1,743.08

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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.