Home / 1,957.14-2,931.30-968.40

Finding the Fourth Proportional to 1,957.14, 2,931.30 and 968.40

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Solution

The fourth proportional to 1,957.14, 2,931.30 and 968.40 is: 1,450.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,957.14 : 2,931.30 = 968.40 : x
  2. Step 2: Convert to fraction form
    1,957.14/2,931.30 = 968.40/x
  3. Step 3: Cross multiply
    1,957.14x = 2,931.30 × 968.40
  4. Step 4: Simplify right side
    1,957.14x = 2,838,670.92
  5. Step 5: Solve for x
    x = 2,838,670.92/1,957.14
  6. Step 6: Final answer
    x = 1,450.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.