Home / 5,385.84-8,071.38-3,434.55

Finding the Fourth Proportional to 5,385.84, 8,071.38 and 3,434.55

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Solution

The fourth proportional to 5,385.84, 8,071.38 and 3,434.55 is: 5,147.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.84 : 8,071.38 = 3,434.55 : x
  2. Step 2: Convert to fraction form
    5,385.84/8,071.38 = 3,434.55/x
  3. Step 3: Cross multiply
    5,385.84x = 8,071.38 × 3,434.55
  4. Step 4: Simplify right side
    5,385.84x = 27,721,558.18
  5. Step 5: Solve for x
    x = 27,721,558.18/5,385.84
  6. Step 6: Final answer
    x = 5,147.12

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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.