Home / 2,487.07-3,730.73-821.35

Finding the Fourth Proportional to 2,487.07, 3,730.73 and 821.35

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Solution

The fourth proportional to 2,487.07, 3,730.73 and 821.35 is: 1,232.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.07 : 3,730.73 = 821.35 : x
  2. Step 2: Convert to fraction form
    2,487.07/3,730.73 = 821.35/x
  3. Step 3: Cross multiply
    2,487.07x = 3,730.73 × 821.35
  4. Step 4: Simplify right side
    2,487.07x = 3,064,219.01
  5. Step 5: Solve for x
    x = 3,064,219.01/2,487.07
  6. Step 6: Final answer
    x = 1,232.06

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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.