Home / 5,415.12-7,471.44-3,315.60

Finding the Fourth Proportional to 5,415.12, 7,471.44 and 3,315.60

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Solution

The fourth proportional to 5,415.12, 7,471.44 and 3,315.60 is: 4,574.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.12 : 7,471.44 = 3,315.60 : x
  2. Step 2: Convert to fraction form
    5,415.12/7,471.44 = 3,315.60/x
  3. Step 3: Cross multiply
    5,415.12x = 7,471.44 × 3,315.60
  4. Step 4: Simplify right side
    5,415.12x = 24,772,306.46
  5. Step 5: Solve for x
    x = 24,772,306.46/5,415.12
  6. Step 6: Final answer
    x = 4,574.66

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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.