Home / 5,479.86-7,560.36-3,120.33

Finding the Fourth Proportional to 5,479.86, 7,560.36 and 3,120.33

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Solution

The fourth proportional to 5,479.86, 7,560.36 and 3,120.33 is: 4,305.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.86 : 7,560.36 = 3,120.33 : x
  2. Step 2: Convert to fraction form
    5,479.86/7,560.36 = 3,120.33/x
  3. Step 3: Cross multiply
    5,479.86x = 7,560.36 × 3,120.33
  4. Step 4: Simplify right side
    5,479.86x = 23,590,818.12
  5. Step 5: Solve for x
    x = 23,590,818.12/5,479.86
  6. Step 6: Final answer
    x = 4,305.00

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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.