Home / 1,009.27-1,511.47-575.11

Finding the Fourth Proportional to 1,009.27, 1,511.47 and 575.11

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Solution

The fourth proportional to 1,009.27, 1,511.47 and 575.11 is: 861.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009.27 : 1,511.47 = 575.11 : x
  2. Step 2: Convert to fraction form
    1,009.27/1,511.47 = 575.11/x
  3. Step 3: Cross multiply
    1,009.27x = 1,511.47 × 575.11
  4. Step 4: Simplify right side
    1,009.27x = 869,261.51
  5. Step 5: Solve for x
    x = 869,261.51/1,009.27
  6. Step 6: Final answer
    x = 861.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.