Home / 1,215.04-1,819.85-1,056.84

Finding the Fourth Proportional to 1,215.04, 1,819.85 and 1,056.84

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Solution

The fourth proportional to 1,215.04, 1,819.85 and 1,056.84 is: 1,582.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.04 : 1,819.85 = 1,056.84 : x
  2. Step 2: Convert to fraction form
    1,215.04/1,819.85 = 1,056.84/x
  3. Step 3: Cross multiply
    1,215.04x = 1,819.85 × 1,056.84
  4. Step 4: Simplify right side
    1,215.04x = 1,923,290.27
  5. Step 5: Solve for x
    x = 1,923,290.27/1,215.04
  6. Step 6: Final answer
    x = 1,582.90

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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.