Home / 1,881.31-2,821.43-1,047.35

Finding the Fourth Proportional to 1,881.31, 2,821.43 and 1,047.35

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Solution

The fourth proportional to 1,881.31, 2,821.43 and 1,047.35 is: 1,570.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,881.31 : 2,821.43 = 1,047.35 : x
  2. Step 2: Convert to fraction form
    1,881.31/2,821.43 = 1,047.35/x
  3. Step 3: Cross multiply
    1,881.31x = 2,821.43 × 1,047.35
  4. Step 4: Simplify right side
    1,881.31x = 2,955,010.60
  5. Step 5: Solve for x
    x = 2,955,010.60/1,881.31
  6. Step 6: Final answer
    x = 1,570.72

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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.