Home / 1,539.83-2,127.28-1,009.97

Finding the Fourth Proportional to 1,539.83, 2,127.28 and 1,009.97

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Solution

The fourth proportional to 1,539.83, 2,127.28 and 1,009.97 is: 1,395.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.83 : 2,127.28 = 1,009.97 : x
  2. Step 2: Convert to fraction form
    1,539.83/2,127.28 = 1,009.97/x
  3. Step 3: Cross multiply
    1,539.83x = 2,127.28 × 1,009.97
  4. Step 4: Simplify right side
    1,539.83x = 2,148,488.98
  5. Step 5: Solve for x
    x = 2,148,488.98/1,539.83
  6. Step 6: Final answer
    x = 1,395.28

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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.