Home / 1,246.04-1,869.42-380.42

Finding the Fourth Proportional to 1,246.04, 1,869.42 and 380.42

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Solution

The fourth proportional to 1,246.04, 1,869.42 and 380.42 is: 570.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.04 : 1,869.42 = 380.42 : x
  2. Step 2: Convert to fraction form
    1,246.04/1,869.42 = 380.42/x
  3. Step 3: Cross multiply
    1,246.04x = 1,869.42 × 380.42
  4. Step 4: Simplify right side
    1,246.04x = 711,164.76
  5. Step 5: Solve for x
    x = 711,164.76/1,246.04
  6. Step 6: Final answer
    x = 570.74

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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.