Home / 2,143.76-2,957.40-1,259.28

Finding the Fourth Proportional to 2,143.76, 2,957.40 and 1,259.28

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Solution

The fourth proportional to 2,143.76, 2,957.40 and 1,259.28 is: 1,737.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.76 : 2,957.40 = 1,259.28 : x
  2. Step 2: Convert to fraction form
    2,143.76/2,957.40 = 1,259.28/x
  3. Step 3: Cross multiply
    2,143.76x = 2,957.40 × 1,259.28
  4. Step 4: Simplify right side
    2,143.76x = 3,724,194.67
  5. Step 5: Solve for x
    x = 3,724,194.67/2,143.76
  6. Step 6: Final answer
    x = 1,737.23

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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.