Home / 1,715.90-2,571.11-1,670.34

Finding the Fourth Proportional to 1,715.90, 2,571.11 and 1,670.34

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Solution

The fourth proportional to 1,715.90, 2,571.11 and 1,670.34 is: 2,502.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.90 : 2,571.11 = 1,670.34 : x
  2. Step 2: Convert to fraction form
    1,715.90/2,571.11 = 1,670.34/x
  3. Step 3: Cross multiply
    1,715.90x = 2,571.11 × 1,670.34
  4. Step 4: Simplify right side
    1,715.90x = 4,294,619.53
  5. Step 5: Solve for x
    x = 4,294,619.53/1,715.90
  6. Step 6: Final answer
    x = 2,502.84

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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.