Home / 5,415.40-8,123.39-1,717.92

Finding the Fourth Proportional to 5,415.40, 8,123.39 and 1,717.92

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Solution

The fourth proportional to 5,415.40, 8,123.39 and 1,717.92 is: 2,576.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.40 : 8,123.39 = 1,717.92 : x
  2. Step 2: Convert to fraction form
    5,415.40/8,123.39 = 1,717.92/x
  3. Step 3: Cross multiply
    5,415.40x = 8,123.39 × 1,717.92
  4. Step 4: Simplify right side
    5,415.40x = 13,955,334.15
  5. Step 5: Solve for x
    x = 13,955,334.15/5,415.40
  6. Step 6: Final answer
    x = 2,576.97

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1.5x scale

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.