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Finding the Fourth Proportional to 1,352.06, 1,866.09 and 1,130.66

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Solution

The fourth proportional to 1,352.06, 1,866.09 and 1,130.66 is: 1,560.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.06 : 1,866.09 = 1,130.66 : x
  2. Step 2: Convert to fraction form
    1,352.06/1,866.09 = 1,130.66/x
  3. Step 3: Cross multiply
    1,352.06x = 1,866.09 × 1,130.66
  4. Step 4: Simplify right side
    1,352.06x = 2,109,913.32
  5. Step 5: Solve for x
    x = 2,109,913.32/1,352.06
  6. Step 6: Final answer
    x = 1,560.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.