Home / 3,147.33-4,722.81-1,298.10

Finding the Fourth Proportional to 3,147.33, 4,722.81 and 1,298.10

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Solution

The fourth proportional to 3,147.33, 4,722.81 and 1,298.10 is: 1,947.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.33 : 4,722.81 = 1,298.10 : x
  2. Step 2: Convert to fraction form
    3,147.33/4,722.81 = 1,298.10/x
  3. Step 3: Cross multiply
    3,147.33x = 4,722.81 × 1,298.10
  4. Step 4: Simplify right side
    3,147.33x = 6,130,679.66
  5. Step 5: Solve for x
    x = 6,130,679.66/3,147.33
  6. Step 6: Final answer
    x = 1,947.90

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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.