Home / 1,887.40-2,830.37-1,021.24

Finding the Fourth Proportional to 1,887.40, 2,830.37 and 1,021.24

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Solution

The fourth proportional to 1,887.40, 2,830.37 and 1,021.24 is: 1,531.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,887.40 : 2,830.37 = 1,021.24 : x
  2. Step 2: Convert to fraction form
    1,887.40/2,830.37 = 1,021.24/x
  3. Step 3: Cross multiply
    1,887.40x = 2,830.37 × 1,021.24
  4. Step 4: Simplify right side
    1,887.40x = 2,890,472.91
  5. Step 5: Solve for x
    x = 2,890,472.91/1,887.40
  6. Step 6: Final answer
    x = 1,531.46

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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.