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Finding the Fourth Proportional to 1,972.02, 2,957.52 and 875.76

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Solution

The fourth proportional to 1,972.02, 2,957.52 and 875.76 is: 1,313.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.02 : 2,957.52 = 875.76 : x
  2. Step 2: Convert to fraction form
    1,972.02/2,957.52 = 875.76/x
  3. Step 3: Cross multiply
    1,972.02x = 2,957.52 × 875.76
  4. Step 4: Simplify right side
    1,972.02x = 2,590,077.72
  5. Step 5: Solve for x
    x = 2,590,077.72/1,972.02
  6. Step 6: Final answer
    x = 1,313.41

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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.