Home / 1,911.84-2,638.21-1,061.04

Finding the Fourth Proportional to 1,911.84, 2,638.21 and 1,061.04

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Solution

The fourth proportional to 1,911.84, 2,638.21 and 1,061.04 is: 1,464.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.84 : 2,638.21 = 1,061.04 : x
  2. Step 2: Convert to fraction form
    1,911.84/2,638.21 = 1,061.04/x
  3. Step 3: Cross multiply
    1,911.84x = 2,638.21 × 1,061.04
  4. Step 4: Simplify right side
    1,911.84x = 2,799,246.34
  5. Step 5: Solve for x
    x = 2,799,246.34/1,911.84
  6. Step 6: Final answer
    x = 1,464.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.