Home / 1,217.08-1,816.73-1,071.28

Finding the Fourth Proportional to 1,217.08, 1,816.73 and 1,071.28

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Solution

The fourth proportional to 1,217.08, 1,816.73 and 1,071.28 is: 1,599.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.08 : 1,816.73 = 1,071.28 : x
  2. Step 2: Convert to fraction form
    1,217.08/1,816.73 = 1,071.28/x
  3. Step 3: Cross multiply
    1,217.08x = 1,816.73 × 1,071.28
  4. Step 4: Simplify right side
    1,217.08x = 1,946,226.51
  5. Step 5: Solve for x
    x = 1,946,226.51/1,217.08
  6. Step 6: Final answer
    x = 1,599.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.