Home / 3,530.40-4,865.70-3,123.06

Finding the Fourth Proportional to 3,530.40, 4,865.70 and 3,123.06

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Solution

The fourth proportional to 3,530.40, 4,865.70 and 3,123.06 is: 4,304.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,530.40 : 4,865.70 = 3,123.06 : x
  2. Step 2: Convert to fraction form
    3,530.40/4,865.70 = 3,123.06/x
  3. Step 3: Cross multiply
    3,530.40x = 4,865.70 × 3,123.06
  4. Step 4: Simplify right side
    3,530.40x = 15,195,873.04
  5. Step 5: Solve for x
    x = 15,195,873.04/3,530.40
  6. Step 6: Final answer
    x = 4,304.29

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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.