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Finding the Fourth Proportional to 5,368.76, 7,405.88 and 3,378.58

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Solution

The fourth proportional to 5,368.76, 7,405.88 and 3,378.58 is: 4,660.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,368.76 : 7,405.88 = 3,378.58 : x
  2. Step 2: Convert to fraction form
    5,368.76/7,405.88 = 3,378.58/x
  3. Step 3: Cross multiply
    5,368.76x = 7,405.88 × 3,378.58
  4. Step 4: Simplify right side
    5,368.76x = 25,021,358.05
  5. Step 5: Solve for x
    x = 25,021,358.05/5,368.76
  6. Step 6: Final answer
    x = 4,660.55

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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.