Home / 1,365.30-1,886.13-1,261.62

Finding the Fourth Proportional to 1,365.30, 1,886.13 and 1,261.62

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Solution

The fourth proportional to 1,365.30, 1,886.13 and 1,261.62 is: 1,742.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,365.30 : 1,886.13 = 1,261.62 : x
  2. Step 2: Convert to fraction form
    1,365.30/1,886.13 = 1,261.62/x
  3. Step 3: Cross multiply
    1,365.30x = 1,886.13 × 1,261.62
  4. Step 4: Simplify right side
    1,365.30x = 2,379,579.33
  5. Step 5: Solve for x
    x = 2,379,579.33/1,365.30
  6. Step 6: Final answer
    x = 1,742.90

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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.