Home / 5,160.84-7,120.62-3,485.28

Finding the Fourth Proportional to 5,160.84, 7,120.62 and 3,485.28

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Solution

The fourth proportional to 5,160.84, 7,120.62 and 3,485.28 is: 4,808.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.84 : 7,120.62 = 3,485.28 : x
  2. Step 2: Convert to fraction form
    5,160.84/7,120.62 = 3,485.28/x
  3. Step 3: Cross multiply
    5,160.84x = 7,120.62 × 3,485.28
  4. Step 4: Simplify right side
    5,160.84x = 24,817,354.47
  5. Step 5: Solve for x
    x = 24,817,354.47/5,160.84
  6. Step 6: Final answer
    x = 4,808.78

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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.