Home / 5,478.86-7,558.98-3,119.33

Finding the Fourth Proportional to 5,478.86, 7,558.98 and 3,119.33

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Solution

The fourth proportional to 5,478.86, 7,558.98 and 3,119.33 is: 4,303.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.86 : 7,558.98 = 3,119.33 : x
  2. Step 2: Convert to fraction form
    5,478.86/7,558.98 = 3,119.33/x
  3. Step 3: Cross multiply
    5,478.86x = 7,558.98 × 3,119.33
  4. Step 4: Simplify right side
    5,478.86x = 23,578,953.08
  5. Step 5: Solve for x
    x = 23,578,953.08/5,478.86
  6. Step 6: Final answer
    x = 4,303.62

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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.