Home / 1,871.73-2,580.66-1,428.93

Finding the Fourth Proportional to 1,871.73, 2,580.66 and 1,428.93

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Solution

The fourth proportional to 1,871.73, 2,580.66 and 1,428.93 is: 1,970.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.73 : 2,580.66 = 1,428.93 : x
  2. Step 2: Convert to fraction form
    1,871.73/2,580.66 = 1,428.93/x
  3. Step 3: Cross multiply
    1,871.73x = 2,580.66 × 1,428.93
  4. Step 4: Simplify right side
    1,871.73x = 3,687,582.49
  5. Step 5: Solve for x
    x = 3,687,582.49/1,871.73
  6. Step 6: Final answer
    x = 1,970.15

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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.