Home / 1,113.19-1,670.64-1,056.09

Finding the Fourth Proportional to 1,113.19, 1,670.64 and 1,056.09

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Solution

The fourth proportional to 1,113.19, 1,670.64 and 1,056.09 is: 1,584.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.19 : 1,670.64 = 1,056.09 : x
  2. Step 2: Convert to fraction form
    1,113.19/1,670.64 = 1,056.09/x
  3. Step 3: Cross multiply
    1,113.19x = 1,670.64 × 1,056.09
  4. Step 4: Simplify right side
    1,113.19x = 1,764,346.20
  5. Step 5: Solve for x
    x = 1,764,346.20/1,113.19
  6. Step 6: Final answer
    x = 1,584.95

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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.