Home / 1,206.05-1,807.08-1,105.17

Finding the Fourth Proportional to 1,206.05, 1,807.08 and 1,105.17

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Solution

The fourth proportional to 1,206.05, 1,807.08 and 1,105.17 is: 1,655.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206.05 : 1,807.08 = 1,105.17 : x
  2. Step 2: Convert to fraction form
    1,206.05/1,807.08 = 1,105.17/x
  3. Step 3: Cross multiply
    1,206.05x = 1,807.08 × 1,105.17
  4. Step 4: Simplify right side
    1,206.05x = 1,997,130.60
  5. Step 5: Solve for x
    x = 1,997,130.60/1,206.05
  6. Step 6: Final answer
    x = 1,655.93

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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.