Home / 5,133.20-7,680.60-4,672.40

Finding the Fourth Proportional to 5,133.20, 7,680.60 and 4,672.40

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Solution

The fourth proportional to 5,133.20, 7,680.60 and 4,672.40 is: 6,991.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,133.20 : 7,680.60 = 4,672.40 : x
  2. Step 2: Convert to fraction form
    5,133.20/7,680.60 = 4,672.40/x
  3. Step 3: Cross multiply
    5,133.20x = 7,680.60 × 4,672.40
  4. Step 4: Simplify right side
    5,133.20x = 35,886,835.44
  5. Step 5: Solve for x
    x = 35,886,835.44/5,133.20
  6. Step 6: Final answer
    x = 6,991.12

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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.