Home / 5,478.68-7,558.50-3,119.55

Finding the Fourth Proportional to 5,478.68, 7,558.50 and 3,119.55

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Solution

The fourth proportional to 5,478.68, 7,558.50 and 3,119.55 is: 4,303.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.68 : 7,558.50 = 3,119.55 : x
  2. Step 2: Convert to fraction form
    5,478.68/7,558.50 = 3,119.55/x
  3. Step 3: Cross multiply
    5,478.68x = 7,558.50 × 3,119.55
  4. Step 4: Simplify right side
    5,478.68x = 23,579,118.68
  5. Step 5: Solve for x
    x = 23,579,118.68/5,478.68
  6. Step 6: Final answer
    x = 4,303.80

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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.