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Finding the Fourth Proportional to 4,260.02, 6,390.05 and 1,486.68

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Solution

The fourth proportional to 4,260.02, 6,390.05 and 1,486.68 is: 2,230.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,260.02 : 6,390.05 = 1,486.68 : x
  2. Step 2: Convert to fraction form
    4,260.02/6,390.05 = 1,486.68/x
  3. Step 3: Cross multiply
    4,260.02x = 6,390.05 × 1,486.68
  4. Step 4: Simplify right side
    4,260.02x = 9,499,959.53
  5. Step 5: Solve for x
    x = 9,499,959.53/4,260.02
  6. Step 6: Final answer
    x = 2,230.03

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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.