Home / 2,810.21-4,215.93-862.57

Finding the Fourth Proportional to 2,810.21, 4,215.93 and 862.57

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Solution

The fourth proportional to 2,810.21, 4,215.93 and 862.57 is: 1,294.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.21 : 4,215.93 = 862.57 : x
  2. Step 2: Convert to fraction form
    2,810.21/4,215.93 = 862.57/x
  3. Step 3: Cross multiply
    2,810.21x = 4,215.93 × 862.57
  4. Step 4: Simplify right side
    2,810.21x = 3,636,534.74
  5. Step 5: Solve for x
    x = 3,636,534.74/2,810.21
  6. Step 6: Final answer
    x = 1,294.04

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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.