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Finding the Fourth Proportional to 1,922.30, 2,881.64 and 947.88

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Solution

The fourth proportional to 1,922.30, 2,881.64 and 947.88 is: 1,420.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,922.30 : 2,881.64 = 947.88 : x
  2. Step 2: Convert to fraction form
    1,922.30/2,881.64 = 947.88/x
  3. Step 3: Cross multiply
    1,922.30x = 2,881.64 × 947.88
  4. Step 4: Simplify right side
    1,922.30x = 2,731,448.92
  5. Step 5: Solve for x
    x = 2,731,448.92/1,922.30
  6. Step 6: Final answer
    x = 1,420.93

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1.5x scale

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.