Home / 3,955-5,931.60-1,490.08

Finding the Fourth Proportional to 3,955, 5,931.60 and 1,490.08

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Solution

The fourth proportional to 3,955, 5,931.60 and 1,490.08 is: 2,234.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955 : 5,931.60 = 1,490.08 : x
  2. Step 2: Convert to fraction form
    3,955/5,931.60 = 1,490.08/x
  3. Step 3: Cross multiply
    3,955x = 5,931.60 × 1,490.08
  4. Step 4: Simplify right side
    3,955x = 8,838,558.53
  5. Step 5: Solve for x
    x = 8,838,558.53/3,955
  6. Step 6: Final answer
    x = 2,234.78

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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.