Home / 4,980.60-7,478.36-4,315.56

Finding the Fourth Proportional to 4,980.60, 7,478.36 and 4,315.56

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Solution

The fourth proportional to 4,980.60, 7,478.36 and 4,315.56 is: 6,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.60 : 7,478.36 = 4,315.56 : x
  2. Step 2: Convert to fraction form
    4,980.60/7,478.36 = 4,315.56/x
  3. Step 3: Cross multiply
    4,980.60x = 7,478.36 × 4,315.56
  4. Step 4: Simplify right side
    4,980.60x = 32,273,311.28
  5. Step 5: Solve for x
    x = 32,273,311.28/4,980.60
  6. Step 6: Final answer
    x = 6,479.80

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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.