Home / 1,911.71-2,867.35-525.17

Finding the Fourth Proportional to 1,911.71, 2,867.35 and 525.17

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Solution

The fourth proportional to 1,911.71, 2,867.35 and 525.17 is: 787.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.71 : 2,867.35 = 525.17 : x
  2. Step 2: Convert to fraction form
    1,911.71/2,867.35 = 525.17/x
  3. Step 3: Cross multiply
    1,911.71x = 2,867.35 × 525.17
  4. Step 4: Simplify right side
    1,911.71x = 1,505,846.20
  5. Step 5: Solve for x
    x = 1,505,846.20/1,911.71
  6. Step 6: Final answer
    x = 787.70

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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.