Home / 3,499.56-4,807.80-3,131.40

Finding the Fourth Proportional to 3,499.56, 4,807.80 and 3,131.40

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Solution

The fourth proportional to 3,499.56, 4,807.80 and 3,131.40 is: 4,302.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,499.56 : 4,807.80 = 3,131.40 : x
  2. Step 2: Convert to fraction form
    3,499.56/4,807.80 = 3,131.40/x
  3. Step 3: Cross multiply
    3,499.56x = 4,807.80 × 3,131.40
  4. Step 4: Simplify right side
    3,499.56x = 15,055,144.92
  5. Step 5: Solve for x
    x = 15,055,144.92/3,499.56
  6. Step 6: Final answer
    x = 4,302.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.