Home / 3,150.80-4,727.12-1,688.84

Finding the Fourth Proportional to 3,150.80, 4,727.12 and 1,688.84

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Solution

The fourth proportional to 3,150.80, 4,727.12 and 1,688.84 is: 2,533.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.80 : 4,727.12 = 1,688.84 : x
  2. Step 2: Convert to fraction form
    3,150.80/4,727.12 = 1,688.84/x
  3. Step 3: Cross multiply
    3,150.80x = 4,727.12 × 1,688.84
  4. Step 4: Simplify right side
    3,150.80x = 7,983,349.34
  5. Step 5: Solve for x
    x = 7,983,349.34/3,150.80
  6. Step 6: Final answer
    x = 2,533.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.