Home / 3,412.55-5,117.88-946.79

Finding the Fourth Proportional to 3,412.55, 5,117.88 and 946.79

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Solution

The fourth proportional to 3,412.55, 5,117.88 and 946.79 is: 1,419.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.55 : 5,117.88 = 946.79 : x
  2. Step 2: Convert to fraction form
    3,412.55/5,117.88 = 946.79/x
  3. Step 3: Cross multiply
    3,412.55x = 5,117.88 × 946.79
  4. Step 4: Simplify right side
    3,412.55x = 4,845,528.47
  5. Step 5: Solve for x
    x = 4,845,528.47/3,412.55
  6. Step 6: Final answer
    x = 1,419.91

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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.