Home / 1,911.61-2,867.49-525.08

Finding the Fourth Proportional to 1,911.61, 2,867.49 and 525.08

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Solution

The fourth proportional to 1,911.61, 2,867.49 and 525.08 is: 787.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.61 : 2,867.49 = 525.08 : x
  2. Step 2: Convert to fraction form
    1,911.61/2,867.49 = 525.08/x
  3. Step 3: Cross multiply
    1,911.61x = 2,867.49 × 525.08
  4. Step 4: Simplify right side
    1,911.61x = 1,505,660.03
  5. Step 5: Solve for x
    x = 1,505,660.03/1,911.61
  6. Step 6: Final answer
    x = 787.64

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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.