Home / 1,918.13-2,877.36-531.47

Finding the Fourth Proportional to 1,918.13, 2,877.36 and 531.47

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Solution

The fourth proportional to 1,918.13, 2,877.36 and 531.47 is: 797.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.13 : 2,877.36 = 531.47 : x
  2. Step 2: Convert to fraction form
    1,918.13/2,877.36 = 531.47/x
  3. Step 3: Cross multiply
    1,918.13x = 2,877.36 × 531.47
  4. Step 4: Simplify right side
    1,918.13x = 1,529,214.14
  5. Step 5: Solve for x
    x = 1,529,214.14/1,918.13
  6. Step 6: Final answer
    x = 797.24

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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.