Home / 1,551.48-2,140.73-984.51

Finding the Fourth Proportional to 1,551.48, 2,140.73 and 984.51

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Solution

The fourth proportional to 1,551.48, 2,140.73 and 984.51 is: 1,358.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.48 : 2,140.73 = 984.51 : x
  2. Step 2: Convert to fraction form
    1,551.48/2,140.73 = 984.51/x
  3. Step 3: Cross multiply
    1,551.48x = 2,140.73 × 984.51
  4. Step 4: Simplify right side
    1,551.48x = 2,107,565.17
  5. Step 5: Solve for x
    x = 2,107,565.17/1,551.48
  6. Step 6: Final answer
    x = 1,358.42

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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.