Home / 4,090.40-6,123.45-2,705.30

Finding the Fourth Proportional to 4,090.40, 6,123.45 and 2,705.30

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Solution

The fourth proportional to 4,090.40, 6,123.45 and 2,705.30 is: 4,049.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090.40 : 6,123.45 = 2,705.30 : x
  2. Step 2: Convert to fraction form
    4,090.40/6,123.45 = 2,705.30/x
  3. Step 3: Cross multiply
    4,090.40x = 6,123.45 × 2,705.30
  4. Step 4: Simplify right side
    4,090.40x = 16,565,769.29
  5. Step 5: Solve for x
    x = 16,565,769.29/4,090.40
  6. Step 6: Final answer
    x = 4,049.91

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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.