Home / 5,156.04-7,117.12-3,166.78

Finding the Fourth Proportional to 5,156.04, 7,117.12 and 3,166.78

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Solution

The fourth proportional to 5,156.04, 7,117.12 and 3,166.78 is: 4,371.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.04 : 7,117.12 = 3,166.78 : x
  2. Step 2: Convert to fraction form
    5,156.04/7,117.12 = 3,166.78/x
  3. Step 3: Cross multiply
    5,156.04x = 7,117.12 × 3,166.78
  4. Step 4: Simplify right side
    5,156.04x = 22,538,353.27
  5. Step 5: Solve for x
    x = 22,538,353.27/5,156.04
  6. Step 6: Final answer
    x = 4,371.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.