Home / 5,485.80-7,571.32-4,315.80

Finding the Fourth Proportional to 5,485.80, 7,571.32 and 4,315.80

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Solution

The fourth proportional to 5,485.80, 7,571.32 and 4,315.80 is: 5,956.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485.80 : 7,571.32 = 4,315.80 : x
  2. Step 2: Convert to fraction form
    5,485.80/7,571.32 = 4,315.80/x
  3. Step 3: Cross multiply
    5,485.80x = 7,571.32 × 4,315.80
  4. Step 4: Simplify right side
    5,485.80x = 32,676,302.86
  5. Step 5: Solve for x
    x = 32,676,302.86/5,485.80
  6. Step 6: Final answer
    x = 5,956.52

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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.