Home / 3,156.48-4,378.08-3,039.84

Finding the Fourth Proportional to 3,156.48, 4,378.08 and 3,039.84

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Solution

The fourth proportional to 3,156.48, 4,378.08 and 3,039.84 is: 4,216.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.48 : 4,378.08 = 3,039.84 : x
  2. Step 2: Convert to fraction form
    3,156.48/4,378.08 = 3,039.84/x
  3. Step 3: Cross multiply
    3,156.48x = 4,378.08 × 3,039.84
  4. Step 4: Simplify right side
    3,156.48x = 13,308,662.71
  5. Step 5: Solve for x
    x = 13,308,662.71/3,156.48
  6. Step 6: Final answer
    x = 4,216.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.