Home / 3,159.39-4,739.05-1,428.02

Finding the Fourth Proportional to 3,159.39, 4,739.05 and 1,428.02

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Solution

The fourth proportional to 3,159.39, 4,739.05 and 1,428.02 is: 2,142.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.39 : 4,739.05 = 1,428.02 : x
  2. Step 2: Convert to fraction form
    3,159.39/4,739.05 = 1,428.02/x
  3. Step 3: Cross multiply
    3,159.39x = 4,739.05 × 1,428.02
  4. Step 4: Simplify right side
    3,159.39x = 6,767,458.18
  5. Step 5: Solve for x
    x = 6,767,458.18/3,159.39
  6. Step 6: Final answer
    x = 2,142.01

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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.