Home / 3,118.28-4,303.12-1,858.69

Finding the Fourth Proportional to 3,118.28, 4,303.12 and 1,858.69

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Solution

The fourth proportional to 3,118.28, 4,303.12 and 1,858.69 is: 2,564.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.28 : 4,303.12 = 1,858.69 : x
  2. Step 2: Convert to fraction form
    3,118.28/4,303.12 = 1,858.69/x
  3. Step 3: Cross multiply
    3,118.28x = 4,303.12 × 1,858.69
  4. Step 4: Simplify right side
    3,118.28x = 7,998,157.68
  5. Step 5: Solve for x
    x = 7,998,157.68/3,118.28
  6. Step 6: Final answer
    x = 2,564.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.