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Finding the Fourth Proportional to 2,925.16, 4,387.42 and 873.32

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Solution

The fourth proportional to 2,925.16, 4,387.42 and 873.32 is: 1,309.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,925.16 : 4,387.42 = 873.32 : x
  2. Step 2: Convert to fraction form
    2,925.16/4,387.42 = 873.32/x
  3. Step 3: Cross multiply
    2,925.16x = 4,387.42 × 873.32
  4. Step 4: Simplify right side
    2,925.16x = 3,831,621.63
  5. Step 5: Solve for x
    x = 3,831,621.63/2,925.16
  6. Step 6: Final answer
    x = 1,309.88

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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.