Home / 3,147.36-4,720.14-1,298.28

Finding the Fourth Proportional to 3,147.36, 4,720.14 and 1,298.28

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Solution

The fourth proportional to 3,147.36, 4,720.14 and 1,298.28 is: 1,947.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.36 : 4,720.14 = 1,298.28 : x
  2. Step 2: Convert to fraction form
    3,147.36/4,720.14 = 1,298.28/x
  3. Step 3: Cross multiply
    3,147.36x = 4,720.14 × 1,298.28
  4. Step 4: Simplify right side
    3,147.36x = 6,128,063.36
  5. Step 5: Solve for x
    x = 6,128,063.36/3,147.36
  6. Step 6: Final answer
    x = 1,947.05

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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.